New can of works here. Am going to get either one. I understand setup-mouthpiece-reed choice etc is all sound related, and that is not what I want to address. What I do want to address is the exacting science, and craftsmanship of the instrument. Example, up to a certain Ser.# the Mark V1 was the Icon of craftsmanship. But as the oldschool masters were lost, so also was the quality of what the Mark V1 was, thus the search for the great Ser# and the disdain for others. With todays new lasers, CNC tooling, but lastly, the masters touch for the fine detail,,,, anyone care to share some knowledge that may have obtained on these topics. Thanks.