Bruno Tilz 310-M 18 vs Schilke S-H
The Schilke S-H has a wider cup diameter, the Bruno Tilz 310-M 18 has a larger throat opening.
Cup Diameter
The Schilke S-H has a cup diameter of 31.84 mm / 1.2535 in compared to 31.50 mm / 1.2402 in on the Bruno Tilz 310-M 18 — a difference of 0.34 mm / 0.0134 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 Bruno Tilz 310-M 18 has a wider throat (7.80 mm / 0.3071 in vs 7.49 mm / 0.2949 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.