Really, it' s a mouth call. I use it more than anything. I have for 30 years. It doesn' t much matter who' s it is. I started with Penn Woods 30 years ago and somehow seemed to acquire mostly Primos and H.S.Strut diaphrams now. It' s ALMOST the only thing I use anymore. I had a 30 year old Lynch box that I stepped on a couple years ago jumping up to go to a bird that I loved only for nostalgic reasons. I have a new Primos box that' s really got good sound, but it doesn' t get a lot of use. I' ve tried several other friction calls and usually carry a couple slates but unless a bird hangs, I don' t generally even take them out.