Bruno Tilz 306-5 GS vs Giardinelli Sym. B.
The Giardinelli Sym. B. has a wider cup diameter, the Giardinelli Sym. B. features a deeper cup, the Giardinelli Sym. B. has a larger throat opening.
Cup Diameter
The Giardinelli Sym. B. has a cup diameter of 26.70 mm / 1.0512 in compared to 26.00 mm / 1.0236 in on the Bruno Tilz 306-5 GS — a difference of 0.70 mm / 0.0276 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Giardinelli Sym. B. has a very deep cup while the Bruno Tilz 306-5 GS has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Giardinelli Sym. B. has a wider throat (7.15 mm / 0.2815 in vs 6.80 mm / 0.2677 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.