Bruno Tilz 210-S 4 E vs Marcinkiewicz BS FL
The Marcinkiewicz BS FL has a wider cup diameter, the Bruno Tilz 210-S 4 E features a deeper cup, the Marcinkiewicz BS FL has a larger throat opening.
Cup Diameter
The Marcinkiewicz BS FL has a cup diameter of 16.74 mm / 0.6591 in compared to 16.50 mm / 0.6496 in on the Bruno Tilz 210-S 4 E — a difference of 0.24 mm / 0.0094 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bruno Tilz 210-S 4 E has a shallow cup while the Marcinkiewicz BS FL has a very shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Marcinkiewicz BS FL has a wider throat (4.39 mm / 0.1728 in vs 3.50 mm / 0.1378 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.