Get Enermax Magma. Plenty of pressure (1.4mm H2O) and airflow, while they are quiet and pretty cheap (if you shop around)
Since I put 4 of those the FX8350 @ 5.1 with 1.5v it was idling at 0C and never gets more than 48C at Prime 95 (gets to 58C for 5 seconds until the pump kicks the revs). So removed two of them, and still temps are low (plus 5 to 7C the above) for even less noise. (18db)
With the 2 corsairs the H100s comes with, plus 2 more fans for PUSH it was getting to 70C on Prime95 and was as loud as a hoover while it was idling at mid 20s.
For watercooling you need high air pressure and the airflow those Magma provide isn't compromised either. (117.49 cubic metres/hour)
Also they are coming with Molex connector if you do not want to attach them on the H100 block.