Hold out for W7
yeah from what I see so far, just get windows 7 if you do not already have windows vista on the hold. For me, I have windows vista and there's no problem with it that makes me really need to change operating systems though so i'm staying with it for now.
Windows 7 is basically windows vista at heart except for the cosmetic differences as well as how things are handled in windows 7 which may make it more interactive for the user, which probably is a good thing so that users actually know where things are.
But so far, I feel that windows 7 and windows vista would run smoothly on decent pc's anyhow.