IMHO these new parts that run hotter need more space and bigger fans, esp with all that filtration slowing down the airflow a bit. I've been looking at the Antec P182, but I'm a bit worried about the space inside. I'm looking to wait for the die shrinkage in current Nvidia/Intel GPUs and CPUs though, which should keep the heat down some. I want a fairly quiet case with well made easy to service filters.
I bought a power socket with a built-in wattage meter. The power supply cord on my current setup is a Y shaped cord, which is connected to both the LCD and the case. I'm getting roughly 200W on this cord while playing HD movies. This is why this system runs so cool, the 450W PSU still has much redundancy in it.
ANTEC P182 looks neat, I like the modular arrangement of HDD bays, etc. The filters in my case are not really easy to maintain. I have to unscrew eight tapping screws to take off the filter on each side. Even this is the easiest part. The top filter requires absence of both PSU and DVR, and I have to reach inside the case to take off two screws to disassemble the front panel. The front fan gets really dirty even with the filter which is hard to clean.
However, since this case is going nowhere but staying, I may try fitting everything in it and see how they glow. If it doesn't work out, I'll get one from ANTEC or Tt.