Bach 2½C vs Marcinkiewicz 3 / 5C
The Marcinkiewicz 3 / 5C has a wider cup diameter, the Marcinkiewicz 3 / 5C has a larger throat opening.
How deep the cup is, from shallow (brighter, easier high register) to deep (darker, fuller sound).
Mouthpiece A
Bach 2½C
• Cornet
Cup depthMedium
Best suited for
All-round versatile — balanced cup for general playing
vs
Mouthpiece B
Marcinkiewicz 3 / 5C
• Cornet
Cup depthMedium
Cup Depth
Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.
Which is better?
Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.