So I just got a bitfenix survivor core case. It only came with one top mounted 200mm exhaust fan, so I got a 120mm sharkoon silent eagle 1000 for the back exhaust and thinking the antec big boy was just a normal 200mm fan I got that for the front intake.The antec didn't seem to fit properly, so after a tiny bit of research I discovered its made to uniquely fit in certain antec cases (thx scan for not bothering to mention that -.-). As I got the case I noticed you can mount two 120mm fans as the front intake instead of a single 200mm fan. I'm not sure if I should go for one 200mm fan or two 120mm fans. 200mm fans seem to be quite rare, and apparently they're quite inefficient. so, to get to the point. Single 200mm intake or 2x 120mm? I would probably get 2 more sharkoons like the one I have in the back fo the case.