John Sinclair is one of the most underrated call makers out there today. His specialty in my opinion is his metal surfaced calls specifically the titanium and brass. I can tell you in my experience for a titanium your gonna want a 3.25" surface but for the brass / copper you'll like the 3" the best. His wood working and finishing on the calls are top notch, and as others have mentioned he's great to deal with and he doesn't have a ridiculously long waiting list. Buy with confidence and go forth and kill gobblers