AIO/CLC whatever you call them I call them are not as good as top air coolers at this time.
Quality water cooling system will cost £120-150+ and are component kits, not closed loop.
Tw33k compared TC14PE, Silver Arrow SB-E and H100. I do know heused 4x UK-3000's on H100 but not sure what the combo was on air coolers.. I assume only 2x UK-3000's (one on each end) and either empty or stock fan in middle. Either way the air coolers were handicapped with 120mm fans as they are designed for 140/150mm fans.
Thermalright Silver Arrow SB-E / Extreme compared to Corsair H100 the SA SB-E Extreme was 7c cooler than H100 and 8c cooler than SA-SBE and only 1dBA louder than H100
i7 3820 @4.75GHz
Temperature is delta.
H100 . . . . . . . . 41c 2500rpm. . . . . . . . 55dBA 2
SA SB-E . . . . . . 42c 1100rpm & 1300rpm 38dBA TY-150 & TY-141
SA SB-E Extreme 34c 2500rpm. . . . . . . . 56dBA 2x TY-143
jump in to 3:40 for results