From personal experience Tagan's truly awesome but Chieftec's never failed me either (note that the only good chieftec stuff is the really high-end one, all the rest are subpar). I dunno how much power you're drawing from each rail, but there are individual limits too, that applies to every PSU (900W is the sum of how much power you can carry over all the rails simultaneously, not on just a few of them).
From those listed I dunno which I would pick, I never really got into details about PSUs. I just buy Tagans for my builds, always worked great for me