I am building my own rig and I really adore a good airflow. So I am looking for a couple of nice 120MM casefans. Budget: <€10 per fan.
These are the requirements in order of importance:
1) Airflow, the more CFM, the better

2) Price, I am a student so I can't afford much. Bang for the buck is the keyword here!
3) Noise, the less the better of course, and a regulator (PWM) is always welcome.
I came down to:
- the Scythe Kama PWM Case Fan 120 Mm, about 56 CFM @ 21dB, 10 euro.
- Arctic Cooling Arctic Fan 12 PWM, 56CFM @ a little more dB, 6 euro. <=
But I am sure there is MUCH MORE to explore

[small]If it is impossible to unite these three wishes, tell me ;)[/small]