I'm running Vista now.
No problems with the install, I booted in the first time and the internet wouldn't work. I fooled around with a lot of stuff before touching it, just getting used to the new UI, and then went on to tackle the problem.
Managed to find the Device Manager... turns out Vista doesn't come with drivers for my NIC. Which is like.. the most generic version available.. so that was sort of annoying. Got a guy down the hall to put the drivers on a flashdrive, and once I got those installed, everything's been easy money.
I love the gadgets. IE.. what? I assume it's 7, sucks hard. But once I installed Opera, I've been having no problems.
Aero (s?) is off, but that's because my computer is 5 years old.
Basic specs:
7 year motherboard. Asus, don't remember the exact model.
Athlon XP+ 1800 1.53GHz
512mb ram
Radeon 9600 All In Wonder 128mb edition.
So yeah. With Aero off, and a couple of programs running, I'm using between 7 and 10% of my processor, so says the gadget that's displayed on my desktop.
Also: I got dual monitor support running like *that*. I didn't need to install or update any drivers, i was just able to go in and enable it with no trouble.
The new start bar is... scary. I don't like it. However, I'm using it instead of the Classic Start Bar (which I used in XP religiously) only because I can hit the windows key and then start typing for the name of my program. I like that.
I'm satisfied, so far. We'll see how my opinion lasts after a few days.
Oh. I'm running Vista Business. I <3 my school's MSDN.