I've been using the the 2-piece belt from G-Code in classes for years. I landed on that after not being happy with the larger battle belt setups that never stayed in place.

The G-Code belt is the right stiffness for me and together with their clips, makes it super easy to swap your setup around very quickly if you want to change pouches or holsters. Slap the inner belt on when you leave the house and quickly wrap on the outer belt with everything mounted when you get to the range. At the end of the day, take off the outer belt and be on your way.