My everyday & dress belts are dress gunbelts:  2 by Ted Blocker in cowhide, & 1 by Greg Kramer in horsehide.  They don't sag, no matter what's on them.  
The Kramer in horsehide has been worn almost daily for 3 years; the only problem with it is some fading of the dye where the most wear is.  The Blockers are older, & still look good (cowhide takes dye better than horsehide, so I'm told).
A good gunbelt will cost more than a regular belt, but will outlast it by years.  It doesn't matter if you don't carry a gun:  the belts are the best!
David