Reading around summer of Corsairs current PSUs launched a long time ago. Definitely get the feeling a refresh is due. I bought two AX750's in 2011 and had no issues at all, very quiet and reliable. I think they were rebadged Seasonic.
Edit: I quite like the idea of the Corsair link software and seeing what you're PSU I'd doing, I know it's not really necessary. I'm not entirely convinced by their current lineup in the wattage range I'm considering. 650-850W, leaving room for upgrades, I upgrade infrequently.