Silent PC Review does solid reviews of components for those looking for quiet components. Here is a link to their PSU list.http://www.silentpcreview.com/article699-page1.html
The Corsair HX520 and Seasonic S12 550 top the charts in the range you are looking at. I recently bought the Corsair 620 for exactly the same reason - trying to limit the noise - and I am very satisfied with it. GL!