I wouldn't get too jacked up about Vista.
After using Macs exclusively all my life, I finally bought a PC a few months ago, so now I have both a Mac AND a PC, which came loaded w/Vista. There are a bunch of compatibility issues w/Vista and some very common software, like Adobe Acrobat (Vista does NOT like Acrobat!) It constantly asks you "permission" to do common tasks, and there are all sorts of other quirks. Sheesh...Macs are SO much easier!