IMO Protech makes the best user ots autos on the market. They're affordable, simple, reliable and well built. Their customer service is also better than MT. For otfs and collectability I think the field goes to MT as your average Protech just isn't very collectable. Even those like the special editions with the skulls will only appeal to a select crowd. That being said some of their DA ots and special edition Godfathers can bring a pretty penny. Quality-wise I don't think you can go wrong either way.