Win7 has further improved handwriting recognition from Vista, which is in turn a big step up from XP Tablet PC Edition (partially because it now adapts to the user's handwriting).
But I certainly wouldn't use it to compose forum posts like this. I prefer to leave it in the background and leave my ink alone, as in OneNote.
At the moment, I'm on my Gateway E-295C/C-140XL and its integrated keyboard. Nothing special, but it gets the job done for the most part.
However, I think I'm about to bite on that DSI Modular Mac deal before it expires. There's no particular reason I have to spend $80 on a keyboard when I already have some perfectly serviceable ones, but I guess that's what this forum does to people. (And if I really do like Cherry MX Blues that much, the two Model Ms I have should go a long way toward recouping that cost.)