#86 MacBook Air from $999

Apple's lightest notebook does have is a full day's use between recharges thanks to the latest generation of Intel Haswell chip and a choice of screen sizes -- 11- or 13-inch. The computer is also superlight and ergonomically perfect for typing. It also has a Magic Trackpad which enables iPhone and iPad-type multi-touch commands, and supports Thunderbolt technology, meaning that it can be paired with practically any peripheral that supports the Thunderbolt protocol, from docking stations to UHD monitors and even professional standard graphics chips. However, for newcomers to the Apple ecosystem, getting to grips with the OSX operating system could be a shock after a lifetime spent using Windows. Still, at just 1kg the 11-inch version is so lightweight it can be easy to forget you've even packed it.