Bach 1G vs Curry 1.5D Large Shank
The Curry 1.5D Large Shank has a wider cup diameter, the Bach 1G has a larger throat opening.
Cup Diameter
The Curry 1.5D Large Shank has a cup diameter of 28.02 mm / 1.1030 in compared to 28.00 mm / 1.1024 in on the Bach 1G — a difference of 0.02 mm / 0.0006 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 Bach 1G has a wider throat (8.10 mm / 0.3189 in vs 7.32 mm / 0.2880 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.