I got Vista off MSDNAA and I already had to reactivate (I moved some hard drives to another controller and booted up once with only one hard drive... vista is touchy about hard drives). Luckily I had a perfectly understandable robotic Indian on the other line, and she quickly spat out the numbers I needed to reactivate.
nVidia has terrible drivers right now and they don't support SLI, although they are at least beginning to be stable. The problem here is not with Vista but with nVidia. More on that later.
Creative has a similar problem, and EAX is generally broken except on X-Fi. GG creative support, we didnt all buy your top of the line product, I guess we don't deserve drivers that work? My Live! 24bit quits working when I come out of sleep mode. Nice.
Nero 7 is the "Vista Edition".
Other than that, desktop performance for me is waaaaay higher than XP. Less windows that dont update, slow UI performance, etc. It's all butter smooth, and faster than XP. The only programs that AREN'T butter smooth are retarded skinned apps like GPGnet and STEAM. Way to go game companies.
Vista also BOOTS faster, for me anyway. I don't know how they accomplished that. I'm running all the same stuff I had on XP (and I carefully monitored my startup programs in XP too).
ATi driver support is pretty meh. Performance is down by a little, and CCC is still slow in Vista. But hey, it was slow in XP too. It's alot more stable than nVidia though.
All of my games so far have worked. Even Grim Fandango.
Oh, and it's prettier.
Alot of people complain about how Vista "uses more memory on initial boot". THESE PEOPLE ARE IDIOTS AND NOT TO BE TRUSTED. In Vista, Microsoft came up with this thingy called "Superfetch" which loads up a whole bunch of files it thinks you might use based on the programs it has observed you using alot in the past, and based on when you use them. It's very clever, and the more you use your computer, it's likely the more ram will be used at boot. Is this a BAD thing? No, it speeds up your programs dummy! It's better than just leaving all that ram empty...
Other people complain about slow disk performance from the indexing... it only really does this for the first couple of days. Since then I haven't noticed it at all, and the benefits it yields are great. The new start menu is very handy; you can search for programs just by hitting "windows key" and typing a matching string. For keyboard heavy users like myself, it's very useful and quick. You can also search Control Panel, provided you aren't using classic mode.
The only thing I feel they screwed up is explorer. Breadcrumbs would be well supported by an "Up" button, especially when theres only enough space to show ONE breadcrumb. Very annoying. The whole explorer interface is cluttered actually, and includes things it really needn't include. I turned it to classic mode. They also break one of their UI recommendations by having no text in the title bar. WTF? Annoying.
One thing I'm wary of is all this DRM the opensource people keep complaining about. As far as I can tell it's all nonexistent right now, but that doesn't mean things won't get locked down years later. Some people make claims like "Vista is gonna force you to DRM all your MP3s and Videos!!!". Ignore them. DRM will basically be like it was in the past. I do not know though, how trusted programs will fit into this. I guess we'll just have to wait and see.
Most of the problems with Vista right now stem from stupid companies who have been sitting on their asses the whole time the new OS was being developed. As a result, alot of them don't have drivers ready yet. Oh and UAC is annoying. But I turned it off immediately. As easy as WINDOWSKEY > "contro" > ENTER > "UAC" > click turn off. Searching with keyboard yay!
New! Fun removed by Vinny :[