sythe ninja+___=quiet cooling

well, I'm getting a ninja for my CPU, and i need to know what fan to use with it

quiet to me is a low 30 dBA rating, and I'd like to have a high 70 CFM rating

I don't know much about fans, so i need a reccomendation.

thanks

The PLUS comes with a fan, but doesn't meet your specs.
Here's a couple of fans to consider..

Panasonic Part # FBA12G12L-1BX
Dimensions 120mm x 120mm x 38mm
Speed 1700 RPM
Air Flow 68.9 CFM
Noise Level 30.0 dBA
Rated Voltage 12v DC
Input Power 2.16 Watt
Rated Current 0.24A
Bearing Type Panaflo Hydro Wave
RPM Sensor Supported with 3pin Header

http://www.jab-tech.com/Panaflo-120mm-L1BX-FBA12G12L1-1BX-pr-3315.html

Scythe S-Flex Fan

Specifications:
Model # SFF21F

Dimensions 120x120x25mm
Fan Speed 1600rpm
Fan Noise 28dBA
Air Flow 63.7CFM
Rated Current 0.2A

http://www.jab-tech.com/Scythe-S-Flex-Fan-SFF21F-pr-3257.html

Scythe just came out with a 100mm fan. This should be just small enough that you can fit 2 of them facing in next to eachother for a combined effect. 120mm fans stick out over the edge a little which is why I never tried it but these fans look perfect for the job. Zip ties should do the trick.
http://www.frozencpu.com/fan-221.html?id=2ben2tAu