You can see in my signature, bottom right, it is Cooler Master V550S 550w. But in my country there isn't much choice for PSU's. I would suggest you to get something from the brands such as :Corsair (avoid CX units), XFX, Antec or SeaSonic
Btw, did you bought it pre build, or build it yourself. If you bought it pre build, check if some of the fans are connected to the motherboard or to the PSU via molex. If they are connected to the PSU via molex, they will run at top speed, while on motherboard, they will run accordingly to your settings.I also use AI Suite 2, since i have ASUS motherboard, and they are running in silent mode for now, while in summers i boost them to performance or turbo for better cooling.