Cooling is definitely not that good. I looked at the Hexus review, and although I have a faster CPU and a 7900 v 6800 video card my temps are comfortably below the review ones. And I only have a P160 at the moment.
Having tried out a number of cases in various builds for people I'm of the firm belief that having a mesh at the front improves cooling performance.
IMO this should be filtered. We all know that leaving the side off cools things down, so a mesh at the side would also seem to be a good idea.
Cases that seem to have this 'happy' configuration are the Antec 900 and the Coolermaster Stacker 83x series.
The one thing that would worry me about the 900 is that it doesn't have any filters.