Bach 3C Flugel vs Curry 8.5 FL
The Bach 3C Flugel has a wider cup diameter, the Curry 8.5 FL has a larger throat opening.
Cup Diameter
The Bach 3C Flugel has a cup diameter of 16.30 mm / 0.6417 in compared to 16.23 mm / 0.6390 in on the Curry 8.5 FL — a difference of 0.07 mm / 0.0027 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
The Curry 8.5 FL has a wider throat (4.01 mm / 0.1580 in vs 3.99 mm / 0.1571 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.