The overall verdict is disappointing. The AeroCool Zero is in fact the only system case among the reviewed ones that can be really regarded as a top-class product, but its over-sophisticated design, which has no practical purpose today, may scare the potential customer away. When it comes to the ExtremEngine 3T and to the AeroEngine JR, there is nothing in them except for the exterior design. One needs to love this design to spend so much money for such an archaic and ascetic chassis.
The large 25cm fan increases noise, but only helps in cooling the South Bridge better. But you can cool that Bridge in a much quieter and simpler way. Such solutions may only be interesting for people who are assembling a system with passive heatsinks because Core Duo and Core 2 Duo processors allow doing that. But don’t forget that this large fan works quietly only at a rather low speed. This should be enough for the above-mentioned CPUs, but may not for a top-end graphics card with a passive heatsink.
So, it’s up to the user to make the shopping decision. Exterior design is often the decisive factor, after all. But if you are not specifically looking for the design like the one offered by AeroCool, you may want to consider other system cases. There is really a wide choice in the $100 category.