I have a type C Baldwin which I bought second hand in the eighties.
It has served me very well over the years.Its good points are its tremendous drive and projection.On the negative side, it is extremely heavy due to its tone ring. It also tends to go out out of tune at the slightest provocation.( What else is new re banjos and tuning)
All in all it is a good hard driving instrument but whether it is better than a RB 250 Mastertone is questionable.I will be selling it soon and with it will go a bit of my heart.