Excellent and thorough review as always. As an air cooler builder, I am always interested in seeing the difference a case design makes in CPU and GPU thermals. What I found intriguing here was that the 900 had the best CPU temp but only third best GPU temp with two other cases tying. Rosewill's classic pull-push case design continues to prove that a simple in-out air solution is the best over a ton of fans blowing everywhere.
With that said, as one who only likes to keep his gaming PCs on top of a desk instead of on the floor where dust gets kicked up, these cube designs would be impracticable. They would look good in the slot of a media center however as a media PC.