I am soon planing to buy a Corsair 800D and watercool it with a 360 radiator and change out some of the fans. What is the best performance fans for the radiator and case that i should get? 120x25mm? or 120x38mm? . I know i can always get a fan controller if things get way to loud. But i don't want fans that reach 170+CFM and 70+dBA and make my computer sound like a hurricane all the time even on lowest settings on the fan controller. My gaming area is relatively small and my case is not to far from me. Any suggestions on optimal performance while not loosing my ear drums?. Any suggestions/experience will be greatly appreciated. 