Comparing 4 Jaeger Bb trumpet models

In this video, Ivan Hunter plays the same brief passages on 4 versions of his Jaeger Bb trumpet. Hear the Jaeger Studio Bb at. 00:33, the Jaeger 37 Bb at 01:29, the Jaeger 43 Bb at, 02:17, and the Jaeger Baumann Bb at, 03:12.