if you want good airflow, quiet, and non-LED... I use these...
http://www.newegg.com/Product/Produc...82E16811999071
they are good for more "ambient" airflow, than a "powered" air flow. I keep my house quite cool, hence I don't need the power behind the air... I just need the flow... I also use these... a little more power, and of course a little more noise, but not much...
http://www.newegg.com/Product/Produc...82E16811999073
I have multiple systems, hence the 6 pack, but they work quite well and are not really that loud...