Well, Corsair sold a lot of shit PSUs back in the day - still do as a matter of fact. The only really recommended ones are pretty much the RMX and RMi series. It's a pretty big problem in the PSU market actually - you take a cheap model from PSU manufacturer X, slap your name on it and there you go, you're now selling PSUs. Well, how much higher would you go then? 600W I can see with some builds, but anything more just seems wasteful.