It's all about the pontoon design. VV is the only company I know of that is not using a "rocker" style pontoon. The rocker style pontoons are great for white water. But we don't fish white water. We fish still waters and we put heavy livewells on the back of these boats. Those livewells will tip other boats if you're not sitting in it. The VV's will not. They are the most stable pontoon design made.
Use any frame you want. Just put VV pontoons under 'em!