Learn to use a mouth call, and you will kill far more turkeys then skipping that step, as far as calling is concerned. Nothing is more versatile then a mouth call period.
I use pretty high dollar friction calls, most of them are custom, whatever that means. Sure they sound great, but I am not sure it makes a hill of beans difference. It is more what you say, and when, rather then how it sounds IMO.
If I wanted 1 super friction call, then there is not a better call then a Darrin Dawkins Aluminum, as far as mouth calls, Original Billy Yargus from woodhaven, is by far the best mouth call I have personally used.