Also notice how the only thing louder than those are the Scythe Ultra Kaze. There isn't any need for any normal person to have a fan run at such high speeds. A 47 CFM Yate Loon would be fine for most people. And if you do need fans that fast, it would only be on a heatsink.
In that case, I would use a Sanyo Denki San Ace 1011. They undervolt really nicely and get really quiet. The only reason I'm not using mine is that I don't have screws long enough for my heatsink.