1000w is a lot of power, either you're running an FX-9590 and a Fury X (Or crossfire 390Xs), or you're trying to run Triple SLI or Crossfire with something else.
I've got a EVGA Supernova 1000W G2, I've had it a year and half and thus far I'm very happy with it. Comes with a 10 year warranty if you're into that sort of thing.
1000w is a lot of power, either you're running an FX-9590 and a Fury X (Or crossfire 390Xs), or you're trying to run Triple SLI or Crossfire with something else.