I have used Rocky Mountain calls and really like the All Star. Somehow they changed. The last several I bought just didn't work for me. The old ones that I still had around worked better. I spoke with Dirk at a Phelps booth and he recommended that I try the Amp orange since I had luck with the All Star before. I love it and it's my go to now. Called in my elk last year with it. I also bought one of his Maverick calls from him and it works too but the latex is just a bit different.