I like it.
I have it on 4 machines in my house (Home Premium - laptop, video rendering
box, wife, and daughter). Here's what I like (YMMV) :
The Start Menu is cleaner and does occupy your entire screen with the levels
and layers.
I like Flip 3d. I keep alot of windows open and am constantly flipping to
other windows. It's great to see the contents before switching.
If you type the name of a program (Word for example) in the search box on
the start menu, the program launches. No need to click beyond at all if you
don't want to.
It seems faster to me than XP, but then most of my machines have 1-2 GB of
RAM.
I have not had the driver issues some have reported. Maybe I'm lucky. I
also did quite a bit of research with my PCs hardware manufacturers prior to
upgrading. Of course I do know my hardware inside and out as I build my own
machines. I only had 2 issues on 4 machines and I knew them going in (ATI
TV tuner problem - found a work around for it and HP All-In-One scanning
didn't work from wireless, had to attach a USB cable to it to get it to
scan).
The networking seems to make more sense to me for some reason. It seems no
matter what window or dialog I'm in I can access the network without a bunch
of convoluted steps or drive mappings. That might be a perception thing or
something I'm doing wrong, but I'm dumb and happy with it.
I haven't had a BSOD or a program fail on it. My NeroVision used to crash
alot on XP. Hasn't crashed yet on Vista. Even Pinnacle Studio (notorious
for crashing in early releases) seems to work smoothly.
I don't seem to get lock-ups.
I like OneCare (yeah I know, flame away). I was using it on XP and it
integrates well with Vista.
Office Home and Business - works great on Vista and you can install it on 3
machines.
Windows MovieMaker seems better. Allows DV capture.
It runs all my daughter's games (she especially loves Barbie Beach Vacation
and Arthur).
My hobby is video editing and production. Vista seems to work great with
just about all my software (except Adobe EncoreDVD, but I don't use that
much anyway). Needless to say, I put alot of strain on my PCs. Vista
renders video quickly and doesn't complain in 2 GB ram. I have 2 machines
with AMD X2s in them and 2 with single-core AMD-64s. All run fine on it. I
have machines with ATI graphics (card and integrated, the integrated is a
200M that only has 64 MB shared and Flip 3-d still runs fine on it) and
NVidia 6100s. No problem with Aero on any of them. My Pinnacle MovieBox
captures video very well on it.
Nothing really earth-shattering. I wouldn't call it a killer app. I just
know I like using it better. Maybe that will change after the newness wears
off.
P.S. My wife is somewhat change resistant when it comes to software and
even she thinks it's easier to use. My 5 year old just likes all the pretty
colors on her machine, sigh.
Art