i kinda think those who suggest XP, they might just want to keep having the chance of bashing windows being "ugly".
I mean, come on, for the specs of modern iMac, where is the problem running vista?
Even with modern computers, I prefer XP to Vista simply because I don't see the sense in using more resources to do the same things. I'd always go to the trouble of installing XP on computers meant for Vista (which meant driver-hunting) simply because I wasn't a fan of upgrading when I wouldn't do anything differently on the new OS compared to what I'd do on the old OS.