I have a physical issue to deal with and absolutely avoid using the keyboard at all, if I can just move the mouse/wheel a few mm to get what I want. I find the Win8 UI to be too 'physical' and the Win7 UI to be more 'usable' for my personal needs. Of course, as for 'touch' ...I'm not even going there.
I tried Win8 + the Stardock solution but it still didn't make me happy. Nothing glaringly wrong with it, and I can't quite put my finger on what it was, but it just felt like a 90% finished product.