If available and the price is right, the new Coolermaster 690 II Adavnced mentioned by Henry is a very good case. Two days ago I had a good look at it a Fry's Electronics Store. I was impressed. Ventilation, airflow, and cooling should be very good.
Have you looked at the Lian Li / Lancoo Dragon Lord cases? They come in a variety of configurations and prices under $100.00 in the USA:
I have the K-60 for my personal pc. I'm quite pleased with it. Ventilation, airflow, and cooling are excellent. Cable managent is very good. All of the Dragon Lord cases have 290mm (11.4 inches) of space for video cards. It can accomodate all of the ATI Radeon 5000 series cards except the very high end 5970.