Well, I ended up getting a laptop with ATI video to run Vista on, and I was a little bummed about it being ATI knowing their crappy drivers. But with Vista they did a miraculous thing and now its NVIDIA with the crappy drivers. But yeah, if you have an
ATI card you get a very good experience on Vista right now, generally.
I've been playing Oblivion on Vista lately and it has been performing very well, I've removed my XP install because I no longer have a need for it to play games.