I've tried Vista for a couple of days and removed it pretty soon after (reasons already explained by others).
I've switched to Ubuntu (which I love) with a partition for XP purely and simply to play Team Fortress 2.
btw I've just installed Office 2003 under Crossover on Ubuntu, and it's as fast if not a shade faster than on XP.
Cheers.
*edit* oh and the eye candy is just as good as with Vista now that Compizfusion has been wedged into Gutsy. 4 Desktops with cube effect anyone?
