I have Thermaltake smart fans in 120, 92 and 80mm which work great, although loud. They are the same fans as BColes was describing. IMO Thermaltake has some of the best fans out there. I was actually looking at the Thunderblade for my next build since the smart fans i have now are too loud at full speed and i never run them at full speed for that reason. Now that i think about it i keep my 120mm fans at 1700rpm even when gaming and my case stays around 30-35C. So yeah go for the Thunderblade, cause, uh, that's what I would go for.