cantankerous,
I think 600 watts should be enough for your setup, but kinda boarderline. You have a very powerful computer and running a PSU at 600 watt is kinda pushing it.
The 750watt Silverstone is very nice PSU.
I'm currently using it. It is true that finding drivers and certain disk emulating programs is a major hassle. But after you get them all (thanks nVidia one download get them all downloads) you so see a good speed increase. Its extremely stable with no lockups or BSOD. For Internet browsing, get...
I work in a PC and Laptop Repair shop, the worst ones I see for hardware defectiveness is Dells, followed up by eMachines. Last night I was working on a Alienware laptop that must have weighed roughly 25 pounds. Thie thing was a beast, it was in because he thought it had (because of the diag...