I have built an ITX build with CoolerMaster Elite 130, to cool my i5, I wanted to experience liquid cooling. I have bought Corsair H55 for now, but its really noisy with two fans in a push-pull configuration under heavy load.
SP are silent, but don't cool as well as the louder AF fans. so up to you. you will lose cooling in favor of silence, but you won't lose a drastic amount