In a world first, we've managed to get our hands on a review unit of Sony's stunningly thin ultraportable. Most surprisingly, it sports the newest Atom chip from Intel - the Z550 2.0GHz and GMA 500 graphics.

Lightweight but perfect for heavy duty business, this ultraportable is sure to impress.

Fantastic battery life and a transflective screen aren’t enough to justify a price this high for the everyday business user.

Long-lasting battery, enough power to go, and a lightweight design: this has it all in a small package

A real prizefighter of a laptop: powerful, well-built and reasonably mobile, too

Dell’s latest business model is another superb outing for its recently released Latitude E-series. It’s not cheap, though

A super-light laptop with great battery life, but the screen is both its stand-out feature and, for some, its Achilles heel

The Asus U6V simply can’t compete with the new breed of Centrino 2 ultraportables

Lenovo’s diminutive business portable packs in high performance, great battery life and top build quality.

Light, packed with features and with superb battery life: the ideal business notebook.

Superb battery life and features, but poor build quality and an uncomfortable keyboard scupper the Lifebook

Great performance, but variable quality and poor battery life harm the U6’s business ambitions

A huge 18.4in widescreen, Blu-ray drive and a big hard disk make this a great entertainment laptop

NEC’s contribution to the ultraportable market is tougher than most, but it still struggles against the competition

A light and well-built business choice, but despite the low-voltage CPU the battery life disappoints

A new way forward for ultraportables, combining an incredible low weight with unrivalled ergonomic excellence

Great design and build quality are coupled with a stunning nine-hour battery life, and it’s affordable too

This notebook was designed from the ground up with business and security in mind, and it succeeds.

A versatile and compact tablet PC with stunning battery life, but we do have a few usability complaints.

A good first stab at the semi-ruggedised laptop market. It isn’t up to the tough standards of others, though.