My advise would be to listen to everyone else about the brand name and I would go for corsair.
I bought an Arctic Power X-Power Pro 950W GTX Extreme Modular PSU and it was fantastic, I blew this up ( Dont tell the Supplier )
If you get one of these I would recommend even though its not an excellent brand.
Saying that I got this from the Supplier Powercool Modular 950W PSU 80+ Dual 12V V2.2 High Efficiency and it was DOA
I then bought this bad boy Corsair TX 850W V2 PSU - 80plus Bronze Certified | Ebuyer.com
I would reccomend this to anyone and it will support all your future needs