I run the 7 beta now. Its quite usable, faster than vista, and as stable as XP. The extra features work fine but they're just gravy on a decent windows OS.

The difference here is that when I got some new PC's with vista, it was so quirky that we had to bust them all back to XP to get them to be usable. (It should not take 25 minutes to copy 12 meg onto a thumb drive).

If new PC's came with the current windows 7, I'd shrug and say "good enough" and not think about it again. At mircosoft's market share, that's a win.