Your system deserves a high end case. Shame.
I'm not quite sure what a high-end case is other than an expensive Obsidian 800D, but I don't like the looks of it. I'm extremely happy with the looks of the CM 690 Nv. Ed. and the cooling an airflow is great in that case aswell (compared to my HAF922, it performs admirably). My only gripe is the lack af space between the backpanel and the sidepanel, but for that a CoolerMaster UCP 1100 with flat cable probably would have been more suited.