I play lead trumpet in my high school big band (which has pretty demanding stuff) and currently use a Marcinkiewicz E12.4 Ingram for playing lead, which, for anyone unfamiliar, is extremely shallow. When I first experimented with shallow mouthpieces for lead playing around 8th grade (I'm in 10th now) it worked out great. It's still working out great in terms of lead playing, giving a lot of volume, brightness, range, and power. But now my tone in the middle register on this mouthpiece is starting to fall behind where I want it to be, which is a pretty inherent problem in any shallow mouthpiece, and I can't get a dark enough or clear enough tone in the middle register even if I try.
So what I was thinking of doing is switching to a mouthpiece that is still fairly shallow and good for playing lead (I can't get ANY range or brightness on a 3C, for example) but deeper than the Ingram to at least make it easier for me to work on tone. I looked right away to Monette mouthpieces, which several amazing lead and jazz players at my high school, now in college, used to use. The only Monette mouthpiece I've tried, however, is a B6LD S1 (the only lead monette mouthpiece that the shop I was at had) and it was WAY too deep for me in terms of lead playing, almost comparable to a 3C. The official Monette website gives this mouthpiece a 4 in relative depth, so I was looking at some ones that it rated a 2.5 and 3, so as to be shallower than the B6LD S1 but still not as shallow as the Marcinkiewicz E12.4. Some of the most popular Monette lead pieces that fell into this category that I saw were the B4LS S1, the MF II/III, and BL2. My question is to anyone who has had experience with these pieces, or with Monette mouthpieces in general (particularly lead ones though), what kind of mouthpiece would you recommend given my needs?