How about at least a mention on the site of the lower trumpets? Like the contralto and bass? Even the contra-alto?
I get a lot of use out of my contralto and bass trumpets and have a number of different types.
Mouthpieces for the Bb trumpet player doubling on bass trumpet is a subject that often comes up. The Bach 15EW is made for such a player and is my mpc of choice on some horns.
I most often use a Schilke 24 in my contralto horns and am looking at buying a Tilz 20.00 mm medium/shallow. The latter is intended for use in low period natural trumpets but I want to give it a whirl in the contraltos. Many contraltos use an alto horn mouthpiece, which sounds okay, but . . .
At some point I want to organise a trumpet 4-tet consisting of 2 Bb's, 1 Eb contralto and 1 Bb bass trumpet. Maybe even write for it, both classical and jazz.
One can never have too many trumpets.