If I may possibly muddy the waters, and further to Bachus' comments...
by total coincidence I've just purchased a manufacturer refurbished Fujitsu Lifebook T730 Windows Tablet / Notebook. 12.6" 1280x800 touch screen, core I5, under £300.
I had been wondering about a 10" tablet to use as my on-stage music library, but don't really want to get tied into iPad. Also my current 10" netbook is windows Xp and also I was really noticing the sloooooow performance and worried about obsolescence to the extent that I was going to put a newer official Windows on it (I need proper ms office). I stumbled on this machine whilst randomly googling and thought it was worth a go and so far so good. I've fitted 8 gig of RAM which also helps!
If you look at it just as a tablet then compared to an iPad it may have a bigger screen but in all other respects the iPad display is seriously better; compared to a pure tablet this thing is big and heavy with worse battery life.
However as a windows laptop it is quite compact and the performance seems pretty good. Windows 7 is not a fabulous touch interface out of the box but if you set everything to be large then the inaccuracy of the fingers is less of an issue. I'm wondering whether to use one of the freeware metro-like front ends for Win 7 to see if that helps. Fujitsu state that this model is mot supported on Windows 8 but there's certainly people out there who have it working and the hardware components of the PC don't look that peculiar.
So, if (like me) you rely on windows software, but would like that available as a tablet on a music stand, this could do that job. It is in no way a direct replacement for an iPad or Android tablet, it's bigger and heavier so you wouldn't want this in your hands all day. Battery life is about 3-4 hours but that's not an issue for me.
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John Allcock