Curry 8.5 BBC vs Yamaha CR-8D2S
The Yamaha CR-8D2S has a wider cup diameter, the Curry 8.5 BBC features a deeper cup, the Yamaha CR-8D2S has a larger throat opening.
Cup Diameter
The Yamaha CR-8D2S has a cup diameter of 16.36 mm / 0.6441 in compared to 16.23 mm / 0.6390 in on the Curry 8.5 BBC — a difference of 0.13 mm / 0.0051 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Curry 8.5 BBC has a very deep cup while the Yamaha CR-8D2S has a deep cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Yamaha CR-8D2S has a wider throat (4.10 mm / 0.1614 in vs 4.06 mm / 0.1600 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.
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.