not that i wanna say vista char sui.
but really, vista doesn't support opengl that well. maya and alot of opengl app can't be run. it's dx10 not so useful for me because it's dx10 made 3dsmax crash like crazy.
I prefer osx eventho it's doesn't have unibin for maya and zbrush. but everything works under the same roof. no crash for me so far. atleast under osx i never spend too much time trying to fix problem instead of working.
I've got more work done under osx.

So far Vista is a really nice eye candy for me. security wise seems ok but nothing else impress me except it's voice command function. as for ppl who mention about financial problem. if u take the amount of money u spend on a pc vs buying a mac. and take the chances it breaks down and look at the stuff bundled in the package. u'll see actually mac is cheaper than pc. atleast the app comes with mac has already enough for u to start making alot of stuff from ur DVDs to ur webpages. and there's alot of free opensource app online.
pc on another hand, eventho vista bundle with some nice stuff. but it's still lacking in making a complete system with app which can allow use to click and get jobs done. u still need to get ur anti virus, install editing softwares, web design softwares and etc to get things started.
I don see myself upgrading my xp to vista in anytime soon unless they get the opengl support back in to windows.
for ppl who question whether the support for opengl is already in vista. go to ati website and check for it's faq. u'll see opengl is not implemented. as for nvidia, it's written that it's supported but when u load ur opengl app. u'll see it runs as slow as a snail.
Cheers guys. good luck to vista.