Curry 10.5 TF vs Kelly 5C-BUGLE
The Kelly 5C-BUGLE has a wider cup diameter, the Kelly 5C-BUGLE features a deeper cup, the Kelly 5C-BUGLE has a larger throat opening.
Cup Diameter
The Kelly 5C-BUGLE has a cup diameter of 16.76 mm / 0.6598 in compared to 15.88 mm / 0.6250 in on the Curry 10.5 TF — a difference of 0.89 mm / 0.0348 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Kelly 5C-BUGLE has a very deep cup while the Curry 10.5 TF has a deep cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Kelly 5C-BUGLE has a wider throat (3.80 mm / 0.1496 in vs 3.70 mm / 0.1455 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.
Material
The Curry 10.5 TF is described as unspecified, and the Kelly 5C-BUGLE as Lexan polycarbonate. Material affects mass, warmth, and how quickly the piece responds.
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.