I now have a Tuniq Tower 120 on my system, I replaced the ACF7 Pro that I had on my Commando (well it went with the Commando for a PC for my daughter) when I replace the MB with an abit QuadGT.
I am very pleased with the TT, it is universally acclaimed as the best, or one of the best air coolers. Interestingly the temps do not differ too much from having the fan screaming on full to having it quiet on 1/3 - and it is a manual (pot) speed control, so I am trying to source an Arctic Cooling AF12025 PWM 4 pin fan to replace the standard TT one and see how that goes.