I lent my neighbour a PC loaded with Windows 7. They have used Vista and XP for some time. However they are really enthusiastic about W7. Their view is "Quicker to open, and just more friendly and intuitive to use than either Vista or XP". I used to be a strong supporter of XP but it feels outdated and clunky compared to W7RC. As soon as I feel assured that the 64bit version has settled down that will go on to most of my PC's.