might be useful

High performer:

1.Delta (FFB0812SHE. 80mm x 38mm, 12v, 4900 RPM, 68.5 CFM, 48.5 dBA)
2.Tornado (80x80x38mm, 12v, 5700 RPM, 84.1 CFM, 55.2 dBA)
3.Delta (FFB0812EHE 80.16 CFM @ 52.5 dBA 5700 RPM)
4.Sunon PMD1208PMB1 (5700 RPM, 84.1 CFM, 55.2 dBA)

Performer:
1.Panaflo U1A (80x80x25.5mm, Ball Bearing, DC 12V, 3.24W, 3450 RPM, 46.9 CFM, 38.2 dB-A Model: FBA08A12U) No fan speed monitor.
2.Panaflo H1A (DC 12V, 2.08W, 2950 RPM, 39.6 CFM, 32.0 dB-A Model: FBA08A12H ) No fan speed moniter.
3.YSTech NFD1281259B-2N (48.5 CFM 3300 RPM 37 dBA)
4.Mechatronics (53 CFM @ 39 dBA 4200 RPM)
5.Sunon KD1208PTBX-6A (50.6 CFM @ 40.5 dBA 3900 RPM)
6.Sanyo Denki 109R0812S402 (42.4 CFM 34 db 3400 RPM)
7.Sanyo Denki 9A0812H401 (36.4 CFM 29 db 2900 RPM)
8.Sunon KD1208PTB2 (39 CFM 2900 RPM 32dBA )

Low noise:
1.Panaflo L1A (FBA-08A12L. 80mm x 25mm, 12v, 0.82 watt, 1900 RPM, 24 CFM, 21 dBA)
2.Papst 8412N/2GML( 26.5 CFM @ 19 dBA 2050 RPM)
3.Papst 8412N/2GL (19.5 CFM @ 12 dBA 1500 RPM)
4.Thermaltake TT-A1357 (20.5 CFM @ 17 dBA 1300 RPM)
5.Sunon 32cfm 28dB (Sorry no model #)
6.Vantec Stealth fan (2050 RPM, 27 CFM, 21 dBA)

Adjustable (Good for noise control):

1.Enermax Adjustable (2000 RPM with 25.4 CFM @ 21 dBA, 2500 RPM with 32.37 CFM @ 27.3 dBA, 3000 RPM with 39.8 CFM @ 32.6 dBA)
2.YS TECH Speed Control NFD1281259B-2F(VR) (Variable Speed 800 - 3700 RPM Airflow 10 - 49 CFM Noise 18 - 40 dBA )
3.THERMALTAKE VARIABLE SPEED FAN (2900 RPM, moving 46CFM @ 27 dBA (25C+), 5000 RPM, moving 53CFM @ 39 dBA (35C+) )

Note:
1.) Panaflo fans need either a 3 pin or 4 pin tail.
2.) I wouldn't trust on Thermaltake's specs too much.

Let me add:

Low noise:
NMB 3110KL-04W-B19 80x80x25mm, 0.13A, 1200 RPM, estimated dB around 13 and CFM of 15.

(avaliable from me. )