Whether you want ultra quiet, ultra powerful, or a compromise between those 2 extremes, one of the 3 fans reviewed by Overclockers Online will probably be exactly what you are looking for.
“As we can see in the testing numbers there is not a huge difference between the three models and because of this there is no single winner. Really, they are all winners in certain setups and situations.”

Here are some more Cases & Cooling reviews from around the web:

Click Here to go to Cases & 

Cooling   CASES & COOLING