They wont admit it but most of the nay-sayers are running vista on their older systems with hardware and software not designed to run on the new os... Other than getting used to the new look, I have no complaints. My game performance is just as good if not better. So far, had zero issues using my older xp games. I bit the bullet got all high end stuff. Downside is it was expensive! I'm getting average 200+ fps depending on the action with vsync disabled @1680x1024
I kinda cheated a bit and bought a "pre-fab" pc from Circuit City, an HP m8120n. I got to looking and couldnt build the same thing for the $1100 price. It had the Q6600 quad, 3 gigs of ram, 2 300 gb hd in raid0 and a TV tuner. So I added a beefier psu, brought the ram up to 4 gb and a 8800 Ultra. All said and done I got a little over 2 grand in it and it still looks like a stock HP and not the refrigerator sized pc it replaces. If I were to give advice about your particular setup, looks like the only thing to do is max out the ram. Vista loves the ram like Earl loves beer
