I've run Vista on my gaming rig since a few months after it launched. Never ever had an issue.
I never had much of a problem with vista either. I think vista sucking was kind of a line int he sand thing. If you were on the side of the line that included upgrading from a machine that was marginal for XP, and/or you were really tied to your disposable printer bundled with your system or sold as a loss leader at the local office supply store because razors and razor blades rather than something decent that was supported, you had a bad time with vista. If you didn't, you didn't.