The coldforge AA-15 is almost too big to properly manage air flow IMO. But you can pile alot of stuff in there...your water cooling setup, custom refrigerant system, etc.
I might buy one in May or June when I put my dual Xeon system together...in my dreams.
I have a lot of crap in my sx830 and the ambient temp is at room temp +1 C. Addtronics are good. Coolermaster's and Lian Li's are cool lookin' and have good cooling.
Whatever floats your boat.