A corsair HX750 would be the most optimal choice. It can output up to 900W, regardless of this 750W will be fine for all of your needs.
900W total, but it only puts out 744 on the 12V rail. That said, if you're willing to pay top dollar, Corsair HX series would be the one to choose (probably one of the best options on NCIX). If you're looking to spend a little less, the XFX is on par in both quality and efficiency, but also puts out a little less than the HX (the XFX would be my choice). Skip the Antecs, as they're much less efficient (and therefore hotter).