This hybrid notebook lifts HP's desktop experience from its TouchSmart IQ506 and drops it into a smallish package - small in that the HP Touchsmart TX2 has a 12.1in screen; but it's a little on the big-boned side, and too heavy to be truly portable, as most laptops with this size screen would be. Size and slow performance are the only drawbacks to HP's otherwise reasonably smart design.

The biggest deal about the HP Touchsmart TX2: it's a fully functional touchscreen tablet. The screen recognizes multitouch gestures (zooming in and out) within some basic Windows areas. It's not a perfect implementation - and it doesn't work across everything in Windows - but it works as advertised with or without the stylus. (we were able to resize desktop icons and zoom in on web pages with pinching motions on-screen.)

Second, the HP Touchsmart TX2's 1,280x800-pixel display is sufficiently bright. Its glossy coating makes it fairly easy to see both indoors and out, despite a little glare; this stands in contrast to most other tablet PCs we've seen, which have some sort of no-nonsense matte coating.

Of course, there is one issue to using a glossy multitouchscreen: smudge city. If the CSI team dusts the screen, we'd be busted. To make matters a little worse, the HP Touchsmart TX2's display is a tad grainy compared with standard notebooks that you'll see next to the tx2 on shop shelves.

Our test HP Touchsmart TX2 had a 2.4GHz AMD Turion X2 Ultra Dual-Core Mobile Processor ZM-86, 4GB of RAM, and a relatively meagre 64MB ATI Radeon HD 3200 GPU, a configuration that will sell for about £1,500.

That combination of parts resulted in a score of 68 on our WorldBench 6 tests - but also presents a bit of a bind for the HP Touchsmart TX2. While the 12.1in screen makes the tx2 a perfect candidate for ultraportable status, the total package also packs on the weight.

Tipping the scales at 1.9kg, the HP Touchsmart TX2 is a bit too bulky and falls in with all-purpose laptops. A score of 68, while not great, is slightly below average among ultraportable machines. In the all-purpose category, though, that's bottom-of-the barrel performance.

So how does the HP Touchsmart TX2 do otherwise? Fairly well, in our hands-on evaluation. The keyboard's buttons have just the right amount of spacing, as well as give for when you start typing away.

And we really like the settings shortcut button next to the screen: it is probably the handiest button on the laptop, besides the power toggle. A quick tap and every major setting you'd likely fiddle with on your PC is in one handy window.

However, the size of the HP Touchsmart TX2 means a small keyboard where sacrifices must be made. Notably, the function keys get short shrift.

Shrunken down to pygmy size, these little buttons also host second functions. Every notebook does that to some degree, so it's not a huge shocker, but there are so many functions crammed along the top, it takes some doing to find and relearn the commands you want.

One thing that's easy to locate, however, is the recessed mousepad: little dips lead your hand to the controls, and the HP Touchsmart TX2 is plenty responsive.

We found the touchscreen laser-accurate when pressing the stylus to the screen, but it gets a little more finicky when you use your fingers. If you have big finfers you'll have to stick with the pen, change the screen settings to allow for larger icons and whatnot, or just be extremely careful with where you point your finger.

But the important thing is that you're getting a screen of reasonable size that recognises your multitouch throughout its windows. By using the familiar pinching motions you've learned to use on iPhones, you can quickly resize desktop icons or zoom into images. There's even a full digitiser - just eject the well-weighted digital pen and you're ready to write.

Tablet design is a very tricky thing to get straight. Take the swing hinge that allows the screen to rotate into a tablet form. It holds firm and keeps the screen in place, but it won't work well on a bus or plane (any bump and, if you're trying to use the HP Touchsmart TX2 like a normal notebook, the screen will go bouncing around).

Also, since the HP Touchsmart TX2 is a slightly beefy tablet, this kind of machine isn't exactly ideal for one-handed use. But the layout of the tablet is definitely helpful: the settings button - just above the multimedia shortcut and screen rotation keys - works very well, and a fingerprint scanner lies near the touchscreen.