Vista never passed through my machine.
I just uninstalled it from a lot of Laptops from my co-workers because the OS was ridiculously slow and resource hungry. Its a pity seeing a Core 2 machine with 1 Gb RAM running like a 386. I never understood why if XP needs just 256 Mb RAM to run flawlessly, M$ "suggestion" for Vista was 2 Gb, and the looks and feel were almost the same (I never was too impressed by aero).
I expect, for what I have been reading all over the Internet, Win 7 is going to be faster and (I hope) compatible with the entire suit of apps currently installed in the system of the common people. In that case, Win 7 is a winner for sure.
Cya!