Bach 5C vs Bruno Tilz 300-22 S
The Bruno Tilz 300-22 S has a wider cup diameter, the Bruno Tilz 300-22 S has a larger throat opening.
Cup Diameter
The Bruno Tilz 300-22 S has a cup diameter of 18.30 mm / 0.7205 in compared to 16.25 mm / 0.6398 in on the Bach 5C — a difference of 2.05 mm / 0.0807 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 300-22 S has a wider throat (3.70 mm / 0.1457 in vs 3.66 mm / 0.1441 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.