Re: which case?
Depends on what your budget is. I hear alot of good stuff about Antec Cases. But I personally like CoolerMaster cases and Ultra's cases. As you all know I still have my Aluminus around. In spite of its really lightweight and low abuse aluminum, it has a great cooling design. I don't know where you can even find them now. But for 70 dollars, it was basically a full tower. The CM690 is, honestly, what I am looking at for my upgrades. It looks like it has a great cooling design plus great I/O placement and a very clean look with the mesh and all. Though if you like windows, you'll have to mod your own in.
RD-PC -//- i7 950 // Evga x58 SLI // 3x2 OCZ PC3-12800 // 2x Evga GTX470 // Corsair HX850 // SilverStone TJ07