Denis Wick 3BFL vs Denis Wick 5BFL
The Denis Wick 3BFL has a wider cup diameter, the Denis Wick 3BFL has a larger throat opening.
Cup Diameter
The Denis Wick 3BFL has a cup diameter of 16.75 mm / 0.6594 in compared to 16.00 mm / 0.6299 in on the Denis Wick 5BFL — a difference of 0.75 mm / 0.0295 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a deep cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
The Denis Wick 3BFL has a wider throat (4.58 mm / 0.1803 in vs 4.45 mm / 0.1752 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.