Ah -- might as well do this: The Good, The Bad and The Ugly of Vista Beta 2:
The Good:
-WAY more stable than any previous build.
-Performance has been increased immensely.
-Core peripheral driver compatibility no longer causes BSODs, probably due in large part to a combination of increased backwards-compatibility and a wider catalogue of out-of-the-box drivers. We can probably thank WinHEC for that, since MS no doubt had to shore up the majority of Vista's driver issues before putting their baby on stage for an audience.
-The RSS gadget in the Sidebar imports RSS subscriptions directly from IE 7, which means you can finally get the news you want to see on your desktop instead of just MS blogs.
The Bad:
-Webcams apparently still aren't supported out of the box, and Logitech, at least, has yet to release Vista-compatible drivers.
-In Build 5365, although my webcam couldn't do video (the video feed was scrambled and unusable) Vista did at least recognize the built-in mic, which allowed for voice calls and use of the Speech Recognition system built into Vista. In Build 5384 (a.k.a. Beta 2) not even the mic is detected.
-The Media Center, while a bit snappier in overall performance, still has a nasty habit of hanging when attempting to render visual elements, be they video, WMP visualizations or even just video file thumbnail icons.
-User Account Control is still only an On/Off affair, rather than having selectable security levels, a la IE, which would be FAR more convenient. Additionally, turning it on or off requires a restart, when it could (at least theoretically) be done simply by logging out of and then back into the user account being modified.
The Ugly:
IE 7+ has an annoying habit, in this build, of leaving a ghost process running on occasion. When this happens, trying to start IE 7 results in a runtime error each time you try to launch, until you go into the Task Manager and terminate the iexplore.exe process tree. Not just the process, the process tree.
So there it is in a nutshell. Still not sanded and polished, but it's already sufficient for a primary OS -- on your home system, at any rate. It may be a few more builds before you'll see Vista through the windows of any cybercafes, but we're very nearly there.