The linked air penetrators are good fans.
I've used the Cooler Master R4 (Sickle Flow), they have about a 6month life before the bearings grind.
The Aerocool Shark make it about 8 months.
BitFenix Spectre fans look to be good, I'd be interested in trying those out. http://www.frozencpu.com/products/14438/fan-928/BitFenix_Spectre_Pro_120mm_Fan_-_Red_LED_BFF-LPRO-12025R-RP.html?tl=c331s518b193