Monette Cornet AP2.5 S3 vs Monette Cornet B3F rim
The Monette Cornet AP2.5 S3 has a wider cup diameter, the Monette Cornet B3F rim features a deeper cup.
Cup Diameter
The Monette Cornet AP2.5 S3 has a cup diameter of 16.40 mm compared to 16.30 mm on the Monette Cornet B3F rim — a difference of +0.10 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Monette Cornet B3F rim has a deep cup while the Monette Cornet AP2.5 S3 has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
Throat diameters are essentially identical at 3.66 mm, so resistance feel will be comparable.
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.