Bruno Tilz 305-4 vs Curry 4C
The Curry 4C has a wider cup diameter, the Curry 4C has a larger throat opening.
Cup Diameter
The Curry 4C has a cup diameter of 25.73 mm / 1.0130 in compared to 25.50 mm / 1.0039 in on the Bruno Tilz 305-4 — a difference of 0.23 mm / 0.0091 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 4C has a wider throat (5.92 mm / 0.2330 in vs 5.80 mm / 0.2283 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.