Silverstone Mammoth MM01
 

As mentioned earlier in the review we are yet to see the MM01 go on sale. That said the case is suggested to cost $300 and that seems like fairly good value, though we don't have anything to really compare it with. To our knowledge there aren't any other desktop cases on the market that feature a HEPA filter making the MM01 very unique indeed.

http://www.legionhardware.com/articl...th_mm01,1.html