It depends on what you mean by "goes with." Cases are compatable with anything. You could stick a Pentium-MMX or a Pentium IV in it and it wouldnt care.
Now if you mean looks the best, I think that red/white/blue Soyo SY-P4I Fire Dragon. Plus I think they donate portion of the sale to a September 11th relief fund (for the special red/white/blue board).