Hardocp has already made a review of Penryn. It should run a bit cooler especially under idle and it performs better than the 65nm chips [H] Enthusiast - Intel's New 45nm Yorkfield QX9650
I read in a review about the Lian Li case that they had trouble fitting in the graphics card so I don't know if I can rule out that one. bit-tech.net | Lian-Li V350 - Lian-Li V350B
The Sugo-1 case does look interesting but I can't seem to find a review of it which uses modernish components. They all seem to be from 2005 or 2006.