I'd love to use my medium mpc for everything, but the fact of the matter is that my chops (while still getting stronger) just can't handle the workload...yet. Both mouthpieces are the same except for the cup depth.
Mouthpiece selection is a rarity here in New Zealand, so most players just deal with whatever they have. I don't have the luxury of being able to play-test a bunch to find something more fitting for everything I play.
I work cruiseship gigs (for now) and to question my respect for the people listening? Well, the average cruiseship guest doesn't know what they're listening to when we play a show, but my personal musical integrity is always working 110%. I just sometimes wish the other guys in the bands thought the same
Sorry if I got a little skewed off topic here.