For what it's worth.... I gave RC1 the benefit of the doubt and ran it for a while yesterday. XP mode isn't available yet. In fact, I actually had more driver issues with win7 beta/vista drivers with it than I had with the beta release. My soundcard, while having slight crackling/static issues in vista, could be fixed by rebooting vista. It just wouldn't work in win7 at all. X-fi, too.

I was forced to use my onboard sound, which had tiiiiiny static issues, but that could have been from the native 7 drivers. I couldn't even find beta drivers for my particular c-media chipset. :-(

However, win7 beta keys do work for rc1.

I can verify that as I used mine. This'll be a bit a mixed bag when it's released, is all I have to say. That is, unless people really start finishing up their Win7 driver sets in time for the rumored sales of Win7 with pc's in time for the back to school season. The actual OS is pretty stable, though. I didn't go through all the ins and outs, but needless to say whatever performance you got from the beta, you'll get in the rc.