Hi Pat, were you by any chance, looking at this thread:
Seems there is a difference of opinion in the Leica User Community about this subject. Some state that all of the Focotars were made by Schneider, others say Schneider made many of them, but that Leitz made the Focotar 2 lenses themselves.
Regardless of who made them, I would expect them to perform very well indeed at their optimum aperture and magnification ratio. Precise focusing at the using aperture is critical, of course.
As to which 50mm enlarging lens is the best, I would like to see a well controlled test performed.