cooling alone: (not taking into consideration quality/construction)
Stock config: Antec 1200. (probably)
If you can afford 3-5x Yate Loon High Speed 120mm fans + a Sunbeam rheobus: CM HAF932 ( customizable can configs, all stock fans can be switched out for multiple 120mm fans.
Water cooling: Haf932 (ability to mount a 120.3 radiator on top)
the above cases don't take into consideration quality of the case, Those two cases are only mediocre in quality. and has much to be improved upon. if a LL case were a 8/10 in quality, i'd rate the CM Haf932 a 4/10. There is plastic used where it can be broken, flimsy panels, sharp steel on the inside that can cut your hands and wires.
hope i helped