I recently picked up an ATLAS belt by Volund Gearworks and I have been extremely impressed. http://www.volundgearworks.com/belts/
I got the belt on Thursday and a quick once over showed a belt that is very solid and has a nice stiff feel to it. The buckle system is unique and works extremely well. For others like myself that have a bit of a spare tire, you know that a larger buckle can sometimes become uncomfortable after a while.
I wore the belt to a pistol class I was took on Friday and was impressed with the way it worked. We were doing a lot of moving, standing, sitting and kneeling and the belt didn't loosen, sag or droop. It is very easy to make very small adjustments (in and out) throughout the day. Sometimes after a big lunch, you need to let your belt out a little.
I own 2 Wilderness belts and I can easily state this is quickly becoming my go to belt. The price is right and shipping was blazing fast. I will be ordering at least one more shortly.