I love my Yeong-Yang cube, the best case I've ever seen for watercooling, perhaps a bit pricey compared to AOpen's best offerings, like the HX08 that I have my old gear in. It's so roomy that going from the HX08 to the cube was like going from a midi-tower to the HX08 big-tower. I'm not watercooling yet but I have plans..
I stumbled upon a site that had lots of pictures of my case with an awesome watercooling rig mounted in it. I saved the pictures for your viewing pleasure:
Awesome H2O cooling rig
I don't remember where I got these
HUGE pictures from, please send me an email if you know the original URL!