I have the RC installed on one of my computers that dual-boots with XP. I liked it a little bit better than Vista, but that's about all I can say. I think it compared to Vista will be in the same boat as XP compared to ME. I did like they made the 64bit version the default, but it does suck that some of the more common software items (e.g. Flash player) don't really have a 64bit version yet (which means it will be a PITA for some to install).