When I need a system to work, I buy Seasonic. They always work, never fail, and will last for ever. They make quality power supplies. I use them in all my server and high end builds.
With Seasonic, you get what you pay for. Quality, performance, and reliability is Seasonic.
Reliable, relatively inexpensive, great warranty, SUPERB customer service. I cannot emphasize how much I like their customer support. I had misplaced a few cables from a SS-560KM and they were able to send me the missing cables for free!