I'll disagree on mouth calls being a "not matter"
I have a drawer full that don't fit my mouth the way I like or sound not so good to downright crappy.
It's a individual thing but I like the Woodhaven and Paul Butski diaphragms.Don't mind paying a little extra for a Woodhaven when I know it will yelp,cluck,purr and cut like a real hen in my mouth. YMMV