My current case, is the Lian Li PC-A05N, and I am an extremely happy camper with it.
In case you are wondering, what you are looking at here. The PSU, is mounted on the front under the hard disks. This means that the entire case is exactly as tall as an ATX motherboard.
The end result, is that I get to fit my entire system in it (with
this cooler and a 5870) in a tower that is actually small enough to transport in a small suitcase.
Here's how it actually compares with the antec 902:
Antec 902: 49.3cm (H) x 21.8cm (W) x 47.2cm (D) 11.5 kg
PC-A05N:
38cm (H) x 21cm (W) x x 49cm (D)
4kg And the Lian Li actually seems to be cheaper...
The graphics card blows air at the rear, and the motherboard is upside down, sucks air from the rear and (along with the PSU) blows it from the front, from those holes on the side. So it's semi-reversed airflow or something, but I rather like it and seems to be working well. Plus I can warm my hands on the hot air coming out from the front side.