Jamie: I don't dispute that different model Casinos sound differently. Moreover, I wouldn't be surprised that even different Casinos of the same model have a different tonality.
The problem is that the tonality of an instrument comes from an interaction of many factors. For this reason it is probably to possible to isolate a single factor as being entirely responsible for the perceived difference.
Nonetheless, tonality is a fascinating study and it is always interesting to speculate what the important variables might be. Wood, solid, semi-acoustic, neck, headstock, nut, bridge, strings, pickups, cord, pick, amplifier, tubes, speaker.
