I recently bought the Antec Performance One P160 case from Performance PC's and I am extremely happy. I had them modify the side panel to include a 120mm fan. The case came with only one 120mm rear exhaust fan so I bought 2 more for extra cooling. The right side panel is a pain to get off as you have to remove the front bezel first. That was my only issue with the case. Inside there is plenty of room for everything. Here is a link to a review about the case.

Antec Performance One P160 Case review

I highly recommend this case. I am in the process of upgrading my current computer to a Core Duo 2 when it comes out in July.

Who else owns one of these cases ?