How about theese, ive used the 120mm versions and found them to be pretty decent.
http://www.overclockers.co.uk/showproduct.php?prodid=FG-013-XI&groupid=701&catid=2331&subcat=819
Arctic Cooling F8 pro, used these and are very quite.
http://www.overclockers.co.uk/showproduct.php?prodid=FG-019-AR&groupid=701&catid=2331
For some reason Arctic Cooling never get mentioned, but I use Arctic Cooling for all my fans, always quite and perform well.
Just to chime in about 80mm fans being load. I have got 2 of the Coolink SWiF2-80P running at 12v ( ran out of reducers ), and they are quiet, all my other fans are at 7v ( 120/ 140 ) Akasa vipers and I can't hear them at all. I had a 12 to 7 v reducer on order but I've cancelled it now as it is not needed.