LookItsRain :
The best water cooler would be an h100i, any 120/140mm coolers are not worth the money.
While I agree the h100i is a great cooler, the fact that 120mm coolers aren't worth the money though? Nuh uh, I own the h55 silent edition and boy does this thing cool my FX-6300! I was able to overclock to 4.5 GHz and keep it under @ a load of 70C, I did turn it down to 4.2 GHz. I would buy a new set of fans if you plan on buying a corsair cooler however, they all tend to die out with me.