Current Windows tablets are terrible unless you need a specific piece of software that only runs on Windows, even then your better off getting a netbook or notebook.
You'd be better off getting an iPad or an Android tablet, with the Galaxy Tab 10.1/8.9 and Asus Transformer being the best.
Windows 8 should be good for tablets, but that won't be released until the middle of 2012. You could get a Windows 7 tablet and install the Windows 8 Developer Preview on it, but as it's Alpha software and has very little software designed for it I would certainly not recommend it.
Oh and that shop is a competitor, you should probably remove it before a mod sees.