I got a gun belt from this guy after reading up on a concealed carry forum. Expensive, but by far the best belt I've ever owned, perfectly supports any holster system from a full size auto on down.
http://thebeltman.net/
I got the 1 1/4" dual layer bullhide with the internal stiffener, have been wearing it for 2-3 years now.
After reading this and looking at the site I ordered a new belt from this guy. It arrived at the door in less than a week, the fit was perfect as I followed his measuring directions, and the quality is great. It is the first quality "gun" belt I've gotten and so far it seems to make carrying a firearm more comfortable and less noticeable. It is stiff compared to the old Cabelas belt I was wearing, but it is also comfortable.
After wearing it for almost a week now I highly recommend the ones from this guy. He also sent a listing of belts he has that were mistakes or returns at discounted prices only available to those who order from him, there is one more I will be getting from that list.