Quote Originally Posted by OklahomaWolf
In the HCP-850 Platinum, Antec took an already excellent design and made it practically unbeatable. This beast is pretty well unmatched for performance right now, coming in here and just obliterating the competition with unreal stability and ripple control. Only two current platforms I can think of can even come close to this - the Seasonic KM3 and Super Flower Leadex. But, neither one of them quite has either the rail stability or ripple suppression both to match this one. I just wish the price was a bit lower. As it stands right now, though, you can't really do any better than this bad boy. We're at the top of the mountain... at least for now.
Source: http://www.jonnyguru.com/

It appears to be the best PSU on the market. The review is missing noise data, but apparently the unit is pretty quiet, too.