upgraded my media center pc (previously running winxp MCE). i was having a lot of trouble with XP and stability, and since it basically needs to run 24/7 reliably i decided to try vista since premium and higher all come now with the media center functionality.
installation was a friggin NIGHTMARE. video issues up the butt. tried 3 cards, 20 driver versions, and about 10 re-formats/reinstallations. tried 64bit and 32bit vista. basically all but gave up.
finally tried a SUPER OLD ati video card, and it worked. video performance is obviously laggy (actually not bad in media center though) but other than that the friggin thing has been running 2 weeks in and out of standby flawlessly recording TV while i'm away (not that there's nothing on).
in another year or so i'll future-proof myself with a nice new 100% vista compatible setup when digital TV tuners come farther along and vista SPs come around.
i like the interface though... a lot of it is pure aesthetics, but still neat looking. i'm not sure all the vista hatred is really founded on anything more than bandwagon posers who haven't even tried it. from an IT standpoint, there might be some substantiation, but even my 100,000+ employee company will be rolling out vista in '08.
i'd at least take advantage of a free copy...