I'm a little different, I'm almost always using a mouth call. I can never remember the names of them, I usually buy several before season and just remember the one I like the best by the color of tape. Last year it was a Hooks but I have no idea what it was called. For many years my favorite was a Primos True Double. It had olive drab tape and I wore many of those out in the late 80s/90s. I don't think I've ever called in and killed a gobbler using just a friction of any type. I have used boxes and slates with my mouth calls but when it's down to crunch time, I'm running some sort of mouth call. It's just what I've been used to since I started turkey hunting.