Either XFX or Nitro, even though I would prefer XFX over Nitro but that's just my opinion. I own from both XFX and Nitro 8 cards = 16 cards in total, no issues whatsoever. I rock them with modded bios. So yeah definitely pick one of these 2, or if you are making like 2 rigs of 4 or 6 cards you can make 1 rig with only XFX the other rig with only Nitro's.
so .. now that we all like the nitro+ as best.. whats up with the all new level ones from sapphire, Pulse? better/worse?