From your instructor (his or her own horn) is Great. less great is Through your instructor who is commissioned to push a brand.
Benge has 3 phases starting in Chicago. Eldon Benge decided to make them one at a time and he made a copy of the French Besson, the trumpet that began the modern concept of a trumpet fusing (early small bore trumpet used by Ellington and the like, basically a cornet with the old style pee shooter bell. The Chicago Benge is one of the best trumpets ever made, there is a model called Meha that's usually large bore (468 vs 459 regular). Then Benge moved to LA and Eldon and a guy named Zigamat Kanstul made the horns that became the standard in commercial recording. (Tijuanna Brass was done on Benge) I got a 73 LA Benge in high school and played it for 30 years. THEN Benge retired and sold his name to United Musical Instruments, UMI, aka King, they also bought out Conn and Martin...these are of lesser quality, but not terrible, and now they are no longer...but Zig Kanstul was allowed to take all the Benge bell molds and mandrels (for making bells) from the original Benge shop and he started Kanstul, so if you wanted a Benge in the 80s & 90s you'd get a Kanstul. They also made great cornets, flugles and even mariachi trumpets. They went out of business a couple of years ago, but there are still great Kanstuls around.
A real Benge has the 2nd valve tuning slide angled forward, not back unlike every other brand, and has a "resno-tempered bell" (whatever that means...but it is thin.