The nzxt phantom is a very nice case and has good reviews/performance. However it can be limiting with large CPU coolers and other overly large components.
The HAF 912,922 and 932 are fantastic looking cases with great performance they also dont really have problems fitting things in.
Similar to the HAF are the Antec DF series and the 1200, large cases great performance.
A different looking case, again great cooling, is the Silverstone Raven 03, this is a little different as it mounts the mobo on a 90 degree angle.
All of these are obviously in a high price range, any idea on how much your wanting to spend?