If it's Tagan Silverpower series is perfectly fine
The zalman and enermax liberty look good, I would avoid the silverstone element series, but now, any of the following is top notch:
-Corsair 620HX
-Ultra X-Pro 600W
-PC Power & Cooling Silencer 610W
-Silverstone OP/DA 650W
-Seasonic S12/M12 650W
-Thermaltake toughpower 650W
-Sparkle R 600W
I have a PC Power & Cooling unit running strong almost 2 years now, no problems with it.