Definitely don't go too cheap on a case. I bought a $40 case and it was cheaply made. The back-plates(by mouse/keyboard etc) were extremely flimsy and would vibrate like crazy. It made such an annoying sound. I took the case apart a number of times to put sound deadening/vibration absorbing material, but it didn't help too much. Then, the PS went dead. So I got an Antec sx830. Enlight's are inexpensive and good quality.