Conn Connstellation 7CW vs Curry 3 DC.
The Curry 3 DC. has a wider cup diameter, the Conn Connstellation 7CW features a deeper cup.
Cup Diameter
The Curry 3 DC. has a cup diameter of 16.89 mm / 0.6650 in compared to 16.42 mm / 0.6465 in on the Conn Connstellation 7CW — a difference of 0.47 mm / 0.0185 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Conn Connstellation 7CW has a — cup while the Curry 3 DC. has a very deep cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Material
The Conn Connstellation 7CW is described as Silver-plated brass, and the Curry 3 DC. as unspecified. Material affects mass, warmth, and how quickly the piece responds.
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.