If your doing them on a mini plane ...niether. I'd want to look for one with at least 2X6 pin plugs built in(more if your collecting the whole set). I've got a rosewill fortress 550w 80 plus platnum for over the top HTPC build (I'm not putting a graphics card in yet but I want it too be ready for whatever).
The 520W Antec have 1 x 6-pin and 1 x 8 (6+2)-pin PCI-E connectors, is that enough? The mini plane needs 2 x 6-pin PCI-E connectors right?
That's my new alternative though it didn't fix my board not work issue. I have a 430 I and figured I try the 520 just to make sure it wasn't the problem. The 520 though that I have is silver color and doesn't blend in as well in the dark while the 430 was black.