Shazza has one, it's pretty easy for watercooling. A very open case, 120mm fan holes for triple radiators.
Are you going with a kit? Or are you going custom?
I have the Stacker 830 evo II
It has grommeted holes for tubing for external radiator's, it has mesh at the bottom for an enternal radiator. You can rig up a triple rad in the front of the case. I really believe it's the best case for watercooling, besides Mountain Mods.
I've always seen the pictures of cool looking WC cases and those that voodoo makes and think they look so awesome. Maybe in college as a summer project I can work on one
Anyway, back to the topic, I'll list mountain mods and the 830 for watercooling friendly whether someone prefers the cube or a regular full tower