I have been using the old ATX 2.1 focus GX gold 850W for my last rig, and seasonic being basically the only brand I build PC for my friends with, never have a complaint except for the price.
Somehow a review of Seasonic PSU is as boring as it could as you can't find any major cheaping out or design flaw with them anyway...
Just out of curiousity, I have been paring my old 850W with their 12v 2x6 90 degrees cable now, but in this PSU it seems only the non 90 degrees cable is available?