Bruno Tilz 306-2 C vs Giardinelli Sym. T
The Bruno Tilz 306-2 C has a wider cup diameter, the Giardinelli Sym. T features a deeper cup.
Cup Diameter
The Bruno Tilz 306-2 C has a cup diameter of 26.00 mm / 1.0236 in compared to 25.80 mm / 1.0157 in on the Giardinelli Sym. T — a difference of 0.20 mm / 0.0079 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Giardinelli Sym. T has a deep cup while the Bruno Tilz 306-2 C has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
Throat diameters are essentially identical at 6.40 mm / 0.2520 in, so resistance feel will be comparable.
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.