Bach 5MV vs Curry 1.25 DC
The Curry 1.25 DC has a wider cup diameter, the Curry 1.25 DC features a deeper cup.
Cup Diameter
The Curry 1.25 DC has a cup diameter of 17.07 mm / 0.6720 in compared to 16.25 mm / 0.6398 in on the Bach 5MV — a difference of 0.82 mm / 0.0322 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Curry 1.25 DC has a very deep cup while the Bach 5MV has a deep cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
Throat diameters are essentially identical at 3.81 mm / 0.1500 in, so resistance feel will be comparable.
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.