Curry 3 C. vs Curry 8.5 B
The Curry 3 C. has a wider cup diameter, the Curry 8.5 B features a deeper cup.
Cup Diameter
The Curry 3 C. has a cup diameter of 16.89 mm / 0.6650 in compared to 16.23 mm / 0.6390 in on the Curry 8.5 B — a difference of 0.66 mm / 0.0260 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Curry 8.5 B has a very deep cup while the Curry 3 C. 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 3.70 mm / 0.1455 in, 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.