Corsair have a good range of large cases...check the Obsidian 700D. The 800D is the big brother to it, with a few extra bells and whistles. There's also the Coolermaster HAF series, which are another good range.
Thank you so far guys keep the suggestions coming. How would the Antec P193 V3 and Antec Three Hundred fare against the suggestions you've made so far?
Antec 300 and 900 or any mid-tower design would be a little crowded for a system with two video cards.