Fractal Design Array R2 Black Mini ITX Storage Computer Case 1X2.5INT 6X3.5INT 140MM Fan 300W PSU - Fractal Design - ARRAY-R2
This is one of my all time favorite if you are looking for small form factor type of case. It also comes with a smaller power supply.
(I <3 this case except I need 12 - 16 hot swap bays/SAS Expander/Redundant power supply)