Full Tower Ultra M923 - $89.98

Full tower case with lots of drives bays, top fan, and looks like plenty of room inside. Was in today's TigerDirect.com spam mail. $90 less than an Antec 1200, and not lacking much in features comparatively.

http://www.tigerdirect.com/applications/searchtools/item-Details.asp?EdpNo=3319620&sku=ULT40125

Lots of room, great easy start for heavy mods. 80mm side vent..? It's kind of frumpy, but If you put in the work..

If they drop the mobo tray and PSU by ~2inchs downward i.e. more space at the top and less space wastage down the bottom it would've been an excellent case to be modded for watercooling. If you put in a 480 or 360 up the top now then the bottom 3 slots on mobo will have to be sacrificed.

The other potential I'm seeing is relocating the PSU so it sits vertically (PSU backplate for the case is easy) and you should be able to fit in a 360 rad there. Another 240 down the bottom front 5.25" bay for good measures.