I have used John Montgomery to repair my violin as well as to purchase a bow from and try out violins from. He was very kind and they helped me out to trying out anything I wanted. They have a nice sized practice room with closed doors for trying out bows/violins. Their work was quality and didn’t take too long (2-3 weeks). They didn’t seem to have a very good trade-in policy, that’s why I didn’t use them for that. But otherwise, good work.