Well most people say go for the Google Nexus 7 or 10 but as they're likely to get the best support as Google directly release the updates.
However I've got a Tab2 10.1" and am please with it, it works quite well, feels reasonably well made and so far no grumbles.
For my own experience the only issue is that I use it to replace a netbook - the 10" screen is getting close to laptop size and for typing and real work you need a mouse and a keyboard I believe.... it just depends what you're going to use it for..... for surfing, email, music, youtube, maps, then it's superb.