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Bitdefender’s only real failing is that it doesn’t match the best products where it matters most: malware protection. It staved off only 77% of attacks, which puts it just above the free AVG and Microsoft products. On the plus side it’s very good at ignoring legitimate software, but if the price for this is weaker security, then we can’t really recommend it.Eset might not have the feature set of the Norton or Kaspersky security suites, bit it makes up for it with an efficient user interface, exceptional protection and the kind of advanced, security-focused tools that power users will appreciate. It isn’t that Smart Security 8 is short on features, more that they’re specific to internet security. The basic anti-malware tools and firewall are backed up by anti-theft protection for laptops, unobtrusive web-access protection, with anti-spam and anti-phishing protection, and optional parental controls.

There’s a gaming mode that suppresses pop-ups and pauses scheduled tasks until you’ve finished playing, and a social media scanner to protect accounts on Twitter and Facebook – but Eset doesn’t cram in optimisation or clean-up tools.The user interface works along similar lines, with a straightforward, pane-based approach that puts the most important information up-front and makes it easy to find the different tools and settings. Malware scans include a basic smart scan that makes intelligent decisions about where and what to analyse, custom scans and removable media scans. Look in Setup, meanwhile, and you’ll find options to enable and disable all components, or even disable them for a fixed period of time – ideal when you need to temporarily turn off antivirus to install a new application. An Advanced Setup panel allows even more fine-grain control, down to how and when you see notifications and message boxes, and set passwords to protect your configuration.

Eset also scores big for its reporting features, and for hidden extras such as the ability to scan running processes to tell you whether or not any risks exist.Eset can be slow when running scans, with our first scan on the ageing dual-core test PC taking just over an hour, although subsequent scans were faster. It’s also quite resource-hungry when a scan kicks off, hogging an average of 32% of the CPU and 21% of test machine's 2GB of RAM.Luckily, the results are worth it: Eset is the only package we've reviewed recently to have defended against every single threat in our tests, although it falls behind Kaspersky when identifying legitimate software. A great suite for the pros.

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It was going to be light. Of course it was. The Lenovo LaVie Z is the world's lightest full-blown laptop, after all, that's its whole raison d'être. And yet, on holding it for the first time, it still felt too light to be real. Read more: Latest news and reviews from CES 2015 It actually feels like you're holding the shell of a laptop, not a working machine. But that isn't the case. Inside this 16.9mm-thick chassis sits a Core i5 processor and, matched with a 13.3in screen, it's more than enough to do some serious work on the move.Plenty of clever R&D has gone into making this happen, and to be fair it isn't all Lenovo's work: the LaVie Z builds upon an NEC design already available in Japan, and Lenovo is bringing it to market as part of the joint venture between the companies (which started way back in 2011).

The main cleverness is the use of magnesium-lithium to build the chassis. This offers both strength and light weight: to be precise, this laptop weighs 777g. And certainly it resisted my prodding and poking, with no obvious showthrough on the back of the screen for instance.There will be two options for the screen for launch, including both Full HD and WQHD resolutions, and it's notable that both will use IGZO technology (rumoured, to the point of near-certainty, to be the screen technology used by the MacBook Air). For those unfamiliar with the properties of IGZO (Indium Gallium Zinc Oxide), the main benefit it offers over conventional transistors is the amount of backlight necessary to produce certain levels of screen brightness. Whether that compromises other areas of the LaVie's performance - such as the colour gamut - will remain to be seen until we get the LaVie into our lab.

Notably, IGZO technology is also used in the all-new Dell XPS 13 - but where Dell's machine promises over 15 hours of battery life, it's disappointing to note that the Lavie Z HZ550 could only keep going for around 5hrs 50mins in Lenovo's tests. Whether that's enough for you is a question I couldn't possibly answer, but it does give a reason to think twice about buying this machine. There are two other criticisms you could direct towards the LaVie. First, it's no looker. There are no smooth contours here, just a square-jawed grey finish reminiscent of ThinkPads of old. Second, there's the limited storage: it will only be available with an 128GB SSD, at least initially.Not that you'll be able to buy it in the UK for a while anyway. If at all. Lenovo is testing the popularity of the LaVie Z by putting it on sale in the US alone for now, with prices starting from $1,299 when it hits the shelves in May.

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Interestingly, it will also have a sister product: the LaVie HZ750. This adds a 360-degree hinge so you can twist the laptop into a tablet position, with the inevitable side effect that it's slightly heavier: 0.93kg to be precise.But in return you get support for Core i7 processors (the HZ550 only goes up to Core i5), and slightly longer battery life: 9hrs 36mins according to my source at Lenovo. Plus, it retains the 16.9mm thickness of its sister product.The LaVie Z is a remarkable piece of engineering by the Lenovo/NEC partnership, and it feels like a genuine step change in terms of lightness: you could slip the HZ550 into a case or rucksack and have to triple-check that it's actually there.I do understand Lenovo's hesitation in making it a global product, however. That battery life of the HZ550 in particular could be a stumbling block, as much as its 128GB SSD, and it's questionable just how many people would pay the premium over slightly heavier laptops.

If the LaVie Z does make it over to these shores, though, I'll be first in line to give it a real-world test on my daily commute.The Dell Venue 11 Pro 7000 has its work cut out. Landing in the PC Pro offices amidst news of Microsoft’s holographic augmented reality goggles and 84in Surface Hub, a mere Windows tablet – and even one of the calibre of the Venue 11 Pro - seems like yesterday’s news. But while Dell’s tablet is unlikely to snatch any headlines, there is one area where it really is cutting-edge: this excellent 10.8in business tablet is now powered by Intel’s Core M processors.If you’ve seen, or indeed own, one of the previous Venue 11 Pro models then you know what to expect. Dell has barely tweaked the design, save for moving a few ports around the tablet’s edges, and it’s fair to say the Venue 11 Pro remains more functional business tool than funky Windows hybrid; between this and the Microsoft Surface Pro 3 then there’s no contest in the looks department.

At 757g it isn't the lightest tablet, either, but it’s as solidly built as we could ask for. Pick it up, and it remains light enough to wield in one hand, and the rubberised plastic rear provides enough grip to stop it slipping out of your hand. It feels like a quality device and, if our Venue 11 Pro from last year is anything to go by, the design is more than capable of surviving day-to-day knocks and scrapes.As ever, the Venue 11 Pro’s Full HD display is a high point. It even gives the Surface Pro 3 a run for its money. Maximum brightness is down on last year’s model, but 398cd/m2 is still bright enough for outdoor use, and the contrast ratio of 886:1 ensures images have plenty of pop. Colour reproduction remains good, too, and the Dell’s IPS panel covers 91.7% of the sRGB colour gamut with a decent level of accuracy. Colours are largely accurate across the board, and the only sticking point is that greyscales are tinted with a slight greenish cast.

Behind the display, Intel’s Core M processors now take pride of place. Gone are the ultra-low voltage Y-class Core i3 and Core i5 Haswell chips of the previous models, and in their stead stand the the 800Mhz Core M 5Y10 and the 1.2GHz Core M 5Y71. Both are dual-core CPUs which, judging by their nominal clockspeeds, look fairly slow. They’re anything but, however, with the Core M 5Y10 boosting up to 2GHz when required, and the Core M 5Y71 reaching 2.9GHz. As a result, the Venue 11 Pro delivers a nippy, responsive performance. Our review unit partnered the Core M 5Y10 with 4GB of RAM and a 128GB M.2 Sandisk SSD, and achieved a very respectable 0.53 in our Real World Benchmarks. That is a little behind the 0.59 scored by the very similar roster of hardware in the HP Envy X2 13, but given the size of the HP that comes as little surprise – the Dell’s smaller, thinner chassis struggles to dissipate the same amount of heat, preventing the Core M CPU from raising its clockspeeds as high and as often. http://www.dearbattery.co.uk/acer.html http://www.dearbattery.co.uk/acer.html

As if to prove the point, we found the Dell gave the best benchmark scores while docked into its optional keyboard. Lying flat on a desk, the rear of the Venue 11 Pro got noticeably hotter during our benchmark tests.We didn't test the Core i3 or Core i5 versions of the first Venue 11 Pro, so we can’t comment on whether Core M brings any performance benefits over the Haswell generation, but battery life is good, besting even last year’s Bay Trail Atom model. With the screen dimmed down to 75cd/m2 and Wi-Fi off, the Venue 11 Pro’s 38Wh battery lasted 11hrs 21mins in our light-use browser test, nearly an hour longer than its predecessor.We remain impressed with the Dell Venue 11 Pro's connectivity. On the wireless front, it has dual-band 802.11ac, Bluetooth 4 and an optional 4G module. Dell has replaced the mini-HDMI output of previous models with a micro-HDMI port, but the single full-sized USB 3 and micro-USB ports for charging duties remain present and correct.

Another nice touch, and one that IT departments will particularly appreciate, is that you can actually get at the Venue 11 Pro’s internal battery. Lever off the plastic rear and it’s possible to remove both the internal battery and M.2 SSD. And if you don’t fancy rooting around inside the tablet to swap batteries, you can always shell out for the optional Tablet Keyboard with its secondary 28Wh battery – in our tests, it almost doubled the Venue 11 Pro’s battery life.In usability terms, we still like the Venue 11 Pro – we like it a lot, in fact. The range of accessories make it possible to transform its capabilities from pure tablet to a pleasingly compact ultraportable, all the way to a desktop PC replacement. Those accessories all come as optional extras, though, so you’ll have to shell out £29 for the active stylus, £160 for the Tablet Keyboard (which unlike and £139 for the docking station.

There are some areas where the Venue 11 Pro does give away some ground to the Surface Pro 3: the Surface Pro 3’s 3:2 ratio, high-DPI screen is a much better fit for a hybrid tablet/laptop device – the squared-off rather than rectangular display is much more pleasant to use in both landscape and portrait orientations, and feels much more spacious in either scenario. Image fidelity is a touch better than the Venue due to the increased resolution, too.And in other respects, the Venue 11 Pro suffers from some of the same niggles as rival devices. There’s nowhere to stash the stylus, for instance, and while the Tablet Keyboard does some things brilliantly, both doubling the Venue 11 Pro’s battery life and providing a comfy, usable keyboard and touchpad, it is annoying that you can’t tilt the display very far back.