Well Vista RC1 now runs much more of my hardware but not all of it. Still doesn't work with my Firewire and one of my RAID controllers. It works with one but not the other.
Doesn't fully support my SoundBlaster Audigy 2 ZS either.

Played with it for a couple days, but the baby is still a pig on resource usage and due to lack of all my hardware support I can't use it for my production use.

Back to XP Pro again for now.