I've gone and upgraded my ancient Sony Vaio PictureBook laptop to a HP Pavilion tx1030ea, one of the new HP tx1000 Vista tablet notebook range.
Unlike most previous tablet PCs, most tx1000s (not all) have an 'passive' contact-sensitive 'touch' screen. Think of a touch-screen PDA and scale it up to a 12.1 inch 1280x800 resolution screen.
So it's not a Wacom-style 'active' arrangement, that requires a special pen/stylus. This has good and bad points; I never got on with the Wacom-style pen/tablet arrangement (actually more so on tablets than tablet PCs to be honest) as I found it disconcerting that the pointer moves even when the pen isn't touching the screen.
In theory, you should be able to use your finger (not just a fingernail) to click on buttons and move windows and other objects, but I haven't figured out how to enable that yet.
Of course, if you lose your stylus pen, you can use a generic one and there is no major expense in replacing it as you would have with an active type. But then again, there is no facility for pressure sensitivy (variable density in drawing and painting), which artists would need, nor a handy eraser function by reversing your active pen. Neither of these points concern me.
I'm having a few teething problems with the pen for writing and drawing as the 'contact' can skip for no apparent reason. But it seems to work really well for Photoshop work, doing selections for example.
The screen does suffer quite a lot of reflections and it is slightly grainy, but I can live with that.
The tx1000 was designed for Windows Vista (I'm running Vista Home Professional) and I have to say I am mightily impressed with the 'coolness' of Vista. But hand on heart, I'd have to say that it's only marginally improved my work efficiency. But it really is cool - Star Trek Next Generation effects have finally arrived!
My tx1030ea has an AMD Turion X2 TL52 (1.6GHz, 2x 512MB cache) dual core CPU, so not as fashionable as Intel Core 2 Duo, but I don't have any performance complaints. 2GB RAM is fitted.
I've installed Photoshop CS3 beta and LightRoom 1.0 trial - no problems at all. Installing QuickTime was problematical (you need to sign the vbscript.dll system file manually - a known Vista issue), but that's fixed now.
So I'm happy, with a powerful and up to date small and quite light (1.9kg) laptop.
PS £999 fromn John Lewis here in the UK; and they include a second year's warranty FOC.