Its screen is hard to view properly, but apart from that, the R500 is a genuine lightweight. At under 1kg, and with battery life longer than four hours, it's perfect for users who work long ours while on the road.

The 901 is better than the 900, thanks to its faster CPU and networking features, but it's still small and will take some time getting used to. Nevertheless, the more you use it, the more you fall in love with it. It's great for taking it on the road with you, for working with office applications, and also watching videos.

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.

While it has a fast CPU and good features, such as built-in 3G connectivity, the U6Sg is let down by poor battery life. This is a major drawback for a unit that's pitched at style-conscious road warriors. If considering this unit, you should either opt for the slower CPU, or the larger, 9-cell battery.

The Flybook VM's lifting screen is very useful and the unit is comfortable to use overall. It has enough power for typical office applications and even Photoshop, and its screen produced rich colours. We wish it had at least one more USB port and an SD card reader. Apart from that, we think this is a great choice for anyone after a comfortable ultraportable unit.

The tiny Flybook V5 is aimed squarely at the business user. It's very mobile, has 3G capability and it can function as a tablet PC. However, it's a hard-to-use laptop and it's missing some useful tablet features, such as a dedicated button for rotating the screen.

Well built and full of features, this lightweight laptop is perfect for professional users who need good speed and ease of use while on the road.

For its sub-$700 asking price, you can't go wrong with the MSI Wind. It was responsive in our tests, and has plenty of storage and a large screen. Most importantly, its battery lasts a long time. This ultraportable is also quite comfortable to use.

As long as far better products remain on the market at similar prices, buyers should steer clear of the Pioneer DreamBook IL1. It suffers from a slow processor, small touchpad and the screen resolution is stretched in all the settings. The only thing that saves this product from being a complete flop is its phenomenally long battery life.

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.

It's well-suited to road warriors thanks to its light weight and built-in 3G module, but it's still not the perfect laptop. If you're going to go for the R500, opt for a solid-state drive instead of a conventional hard drive.

It runs Windows Vista, has a large hard drive and is basically a full-blown computer that's about twice the size of a smartphone. It's perfect for anyone who is after a small tablet PC for under $1800.