I run the beta once in a while in VMware on my Windows XP computer. I tried running Vista Basic on VMware and it was a turn on, crash loop. Honestly, I'm a person who prefers performance>graphics (yeah, I'm one of those people who right after they get a game, opens options and puts graphics to minimum, should see my XP, I turned off themes, wallpaper, and visual effects XD). The graphics are very nice, and it makes it so much nicer that it actually runs with good performance. Having fixed several computers for friends who have Vista, I absolutely hate it.
I'm saving money (since I'm a full time student, no job, no license, no allowance, no income at all, not counting my Birthday and Christmas, which even then I don't get much, about $100 total tops) to get a nice computer; not wasting money buying weaker computers in the process, I'm going straight to the powerful ones, and with Windows 7 when it comes out. I have $445 saved, so I guess I've got a ways to go.
Great OS, Vista graphics, better than XP performance (with full graphics, Ultimate version tested), few issues even in Beta (as far as I've tested).
Current computer specs:
Dell Dimension 4600
Memory: 1.5gb DDR
CPU: Intel Pentium 4 - 2.6MHz
Graphics Card: NVIDIA GeForce4 MX 4000 (64mb)
Hard Drive: 80GB ATA (Yes, it has been killing me Q_Q)
A bit old, had it for a while, the CD-RW drive has a bug that won't let it write.
Anybody want to donate their computer or a component to me, I'll gladly take it