Bruno Tilz 211-D 7 vs Giardinelli S15
The Bruno Tilz 211-D 7 has a wider cup diameter, the Giardinelli S15 features a deeper cup, the Giardinelli S15 has a larger throat opening.
Cup Diameter
The Bruno Tilz 211-D 7 has a cup diameter of 19.00 mm / 0.7480 in compared to 17.50 mm / 0.6890 in on the Giardinelli S15 — a difference of 1.50 mm / 0.0591 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Giardinelli S15 has a deep cup while the Bruno Tilz 211-D 7 has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Giardinelli S15 has a wider throat (4.50 mm / 0.1772 in vs 4.30 mm / 0.1693 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.