I went to Vista but had problems with some of my older software...so I went back to XP. I was never unhappy with the XP-SP2 version.
Vista is pretty and has some neat tricks; but offered nothing I would use a lot. Heck, I like my Corolla better than my turbo Saab and like being self employed more than the higher-income corporate work.
Guess that I’m just weird.
I think you'd love a Mac...