The U1010 is about twice the size of a smart-phone, yet it's a fully-fledged Windows Vista-based tablet PC. It's suitable for professional users, or even regular travellers, who want a very mobile device with all the functionality of a typical computer. Unfortunately, it lacks built-in 3G features.

The VAIO TZ17GN is an ideal ultraportable thanks to a compact, lightweight frame, good battery life and solid, if not outstanding performance. A stylish design sweetens the deal.

The OQO E2 is quite an impressive little design with some good connectivity and would suite a number of tasks, as long as they require more portability than power

The Acer Aspire 2920-302G25Mn is an ultraportable 're-imagining' of the all-purpose Gemstone series; offering a similar performance in a lightweight package. Provided you can overlook its garish interior, there's plenty to love about this little gem of a performer.

The screen may have a poor viewing angle, but the rest of this portable business option is pleasant to use. The LifeBook P8010 may not be as thin as some of its closest competitors but it's still a very portable unit.

A capable and solidly built ultraportable that's worth considering. It could use some refinement, but its strong case, built-in DVD burner and long battery life are major positives.

It looks great and has fast specifications for an ultraportable laptop. It's a good thing it comes with a second, larger battery though, because its small battery produced a very low run-time in our tests. Nevertheless, if it's a lightweight powerhouse that you want, this one is ideal.

This is a laptop for the fashion-conscious user who wants to get some work done on the road. It has good connectivity features and it is small and easy to carry, but don't expect to be able to perform taxing tasks on it.

If you’re not quite rich enough to own a luxury sports car, but still have more money than sense, then the Asus-Lamborghini V3 might just be the status symbol you're looking for. However, it isn’t that fast for a Lamborghini notebook, and is exorbitantly priced for what it offers.

This Linux version of the Aspire One is easy to use and has a solid-state drive, but the Windows XP version has better memory and storage capacity for only $100 more. Furthermore, Acer will also release versions with built-in 3G modules. It's really a case of waiting for the new versions to arrive, unless the portability and ease of use of this unit catch your fancy.