Here a link to Johnny Guru's web site; A search under cooler master turns up several different models that he has tested. Mixed results, but generally o.k.http://www.jonnyguru.com/
Some of the early Cooler Master PSU's were not very good, but they have made a concerted effort to improve their products.
Shop carefully, read reviews (not just on the merchants web site) of the one you are interested in and then make an informed choice.
At present the top quality brands/manufactures are Seasonic, XFX, Corsair, PC Power&Cooling, Antec, Rosewill CAPSTONE series.
This link should also be helpful:http://www.eggxpert.com/forums/thread/323050.aspx