In that rental house I mentioned, there is one screw drive, and one belt drive side by side. There is not enough difference in noise between the two...
After building and using a couple of mobile bases recently, I'll never again have any mobile base with anything smaller than 4" wheels, easy to lock...
Brian, I also have a Brakesmart. When I looked for a link this morning, it looks like both Brakesmart and Maxbrake (a later variation by Brakesmart)...