Antec P182 ATX Case
 

Although I have never used any other top end cases I have had a chance to take a look at several and the Antec Performance One Series (P150 - P190) has always been at the top if my list. The changes made to the P182 are a huge step forward IMO, I only have one gripe and that's the placement of the fan in the lower chamber.

http://www.viperlair.com/reviews/cas...ec/cases/p182/