I have an Intuos3 and it's about the best thing since paper, even though it's getting a bit old now. Expensive, yes, but I suppose you get what you pay for.
I've had 1 or 2 cheap tablets in my life, and they worked fine, but I wouldn't go back now.
I'm actually saving up for a Cintiq. Did someone say expensive?
...but this isn't a thread about tablets, it's about how awesome pyteo's game is. And in relation to that, is it likely there'll be an update in the near future with refined controls... especially xbox360 controller support? I'd play the sh*t out of it if you did that.