I had a Corsair C70 case left over from my 4 GPU mining rig. Found it to be a perfect home for my to Antminer S1's. The only real modification (ie. needed drilling) is the removal of the top drive bays. I love this case. Easy removal of side panels, good space, carrying handles and often discounted in white as the color is not that popular.

Panel on, lights off:

Panel off, with flash:

Original vents for radiator: