CoolerMaster cases are fine. Do NOT buy their PSUs.

If you're willing to spend a little more and don't care if the case is heavy, I bought one of these

http://www.endpcnoise.com/cgi-bin/e/...ntec_solo.html
Newegg link: http://www.newegg.com/Product/Produc...k=antec%20solo

for my Mom's multiboxing PC and it worked out extremely well. Isolates fan/drive noise extremely well. Like I said, it is heavy compared to normal light aluminum cases, though.

[edit] And FYI, it was big enough to fit a Thermalright Ultra 120 on the Quad core.