Curry 124D vs Denis Wick 1L
The Denis Wick 1L has a wider cup diameter, the Denis Wick 1L has a larger throat opening.
Cup Diameter
The Denis Wick 1L has a cup diameter of 32.50 mm / 1.2795 in compared to 31.50 mm / 1.2400 in on the Curry 124D — a difference of 1.00 mm / 0.0395 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 1L has a wider throat (8.43 mm / 0.3319 in vs 8.23 mm / 0.3240 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.