The HP Blackbird is back with a little bit more reaonsable pricing. The technical design of this case is excellent with tool-free configuration and it can come up with 8GB of DDR3 RAM, Intel Core 2 Extreme Quad-Core 3.2 GHz, Liquid Cooling for CPU & GPU, Dual Graphics cards and a few more options. The price range can go from $1800 up to $6500 depending on your choices, I like how it is but not sure about liquid cooling lasting long, might prefer air cooling.

Link: HP