I am impressed with the cooling in this case - for GPS cooling it is excellent.
I will need to make 2 mods to improve the airflow however:
1. Create a heat shield on the bottom of the case between the PSU exhaust and the 2 intake fans. When the PSU heats up the intake fans draw in a lot of hot air. Perhaps a better PSU than mine would also help (my PSU is terrible)
2. I will need to open up those side ventilation areas on the side of the case - there is actually solid plastic under that mesh, except for a few sporadic holes which is crazy from a design point of view.