Need advice on cooling fan


I am looking for a near-silent cooling fan. Variable speed and thermostatically controlled are a plus. Any recommendations?
mabonn
http://www.quietpcusa.com/Quiet-Computer-Fans.aspx I've ordered from these folks a couple of times. Great service and nobody I've found has a better selection.
If you have a Tiger Direct near where you live, that will probably be the best place to go. Corsair are very good and not too much money. They also make speed controls and silent power supplies. Given the application, I would get a modular power supply.