jesse618; if you can find any at all then definitely try out Thermalright's FDB fans, they're basically rebadged S-Flexes which are awesome fans; if you can't, then give the Scythe Kama Flow 2 a try, they go down to 800RPM.
Originally Posted by jonespwns
I use this fan and I love it to death. http://www.newegg.com/Product/Product.aspx?Item=N82E16835705004
It runs loudly, but the amount of air this thing pushes is well worth the sound. It legitly sounds like a normal fan you would be running in your room on a speed between slow-medium.
Funny, I have one of those, too, and it's VERY loud at full speed, hence why I have it connected to my Rheobus with my other fans. The motor tone is very pleasant but the noise volume overtakes it by a long shot.