Why are the HD 8370's still on your list??
The 8800GT is superior and cheaper.
And are you still dead set on using vista? You're not missing anything... believe me. You could pass on vista, get the oem XP pro disk and use the money you'd save to buy a WD raptor hdd to load your OS onto and your computer would be faster. I speak from personal experience. Raptors are worth their weight in gold.