I use the Cooler Master Storm Sniper. It's glorious. Loads of space for any hardware you can think of, bowed out side panels for cable management space, tool-less drive insertion, fan controller, LED switch, lots of room for fans and even water-cooling holes. I don't see myself ever getting rid of this case. Right now, I have i7 920 + H50 on an Asus Sabertooth X58 board and GTX 580, 3 hard drives, two disc drives. Get it.http://www.newegg.com/Product/Product.aspx?Item=N82E16811119194
EDIT: Also, I had the Cooler Master V8 before I had the H50 and it fit fine in the case without any interference from the side panel. At the time, I had a 120 on the side. Not sure if it would fit with a 200 mm on the side panel of the case, but I think so. Didn't try.