Curry 10.5 BBC vs Denis Wick 5
The Denis Wick 5 has a wider cup diameter, the Denis Wick 5 has a larger throat opening.
Cup Diameter
The Denis Wick 5 has a cup diameter of 16.00 mm / 0.6299 in compared to 15.88 mm / 0.6250 in on the Curry 10.5 BBC — a difference of 0.13 mm / 0.0049 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a very deep cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
The Denis Wick 5 has a wider throat (4.45 mm / 0.1752 in vs 4.06 mm / 0.1600 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.