The new Corsair chassis like the one I have now allows you to mount an H80/H100 or whatnot to the roof of the chassis, this is where you blow the air straight out the top and is the most suited configuration for these all-in-1 watercooling devices.
@DKS, when you are used to silent computing and built many custom liquid cooled computers that are barely audible, *any* fan noise that you aren't used to will drive you insane. I recognize tolerance to fan noise is entirely a personal affair however. Most people feel the fans aren't so loud either, but they certainly aren't silent.
There is something to be said about achieving pure silence on a system with triple SLI and a top-end CPU while pumping out the framerates in a game. I did that once, got bored of it, now I stick to the all-in-1 cooling devices as they're far easier to deal with.
Like most cool things, the novelty tends to wear off, and you think more practical.