Lo Guys,
I'm not gonna rubbish other HSF's. As a replacement to my Gigabyte 3D Cooler (3200rpm jobby) I had just fitted the all kicking dancing Arctic Cooling Freezer7 REV2. Going from my 3D Cooler to the AC Freezer ...well I wish I hadn't bothered now (and now I have gone back) -idle on the 3D Cooler is about 33c (max rpm) on the AC Freezer was about 39c @ 2000rpm (and I couldn't increase the speed whatsoever! believe me I tried!).
Gigabyte 3D Cooler - bought that in like 2005/6 - not bad....now to find a spare! (anyone?).