Hmm you guys are right. I think I got a bit sidetracked while researching on SPCR!

While keeping the system relatively quiet is one of my goals, so is clocking 1.8/2.0 Opterons to 2.5-2.7
I've ordered one of those mCubed T Balancer controller units, so I should look for some fans with a higher airflow rating, as the TBAN will turn them down anyways.
These ones look better;
Tek Chain TC-12CAS-BL
120mm
900-1700RPM
~65CFM at full speed
19-33dBA
Tek Chain TC-8CAS-BL
80mm
1500-3000RPM
~32CFM at full speed
18-30dBA
Sleeve bearing fans, with built-in RPM control knob - this I do not want, as the TBAN will be controlling the fans, but that shouldn't be a problem. Just gotta set the fans to max and take the knob off.