Why does Windows run so much worse than Mac, allegedly? 'Cause it's popular, so more viruses are written for it than Mac. If everyone used Macs, I think Macs would get the same complaints.
Vista is good, but some "legacy" software of mine doesn't have compatibility with it, and I'm running the 32-bit version. I know of no Vista patch for Sonic R. (I know, I'm a freak for wanting to play it, but meh. It's a nice kinda' nostalgic trip signifiying what 3D Sonic could and maybe should have felt like.)
It seems to run just fine for me, and I greatly prefer Aero and transparencies to the XP themes. (Ugly as sin, I tell you!)