Bruno Tilz 306-5 GS vs Denis Wick 10CS
The Bruno Tilz 306-5 GS has a wider cup diameter, the Bruno Tilz 306-5 GS has a larger throat opening.
Cup Diameter
The Bruno Tilz 306-5 GS has a cup diameter of 26.00 mm / 1.0236 in compared to 25.00 mm / 0.9843 in on the Denis Wick 10CS — a difference of 1.00 mm / 0.0394 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 306-5 GS has a wider throat (6.80 mm / 0.2677 in vs 6.24 mm / 0.2457 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.