I've been using a Johnny Stewart for years. When I got it, it was state of the art. But now it is outdated and obsolete. Yes it still works but there is new callers out there that work so much better. With the old one it played tapes, I could only play one at a time. To change I had to physically change the tape out of the player. That involved a lot of noise that would spook game. My partner bought a Fox Pro this fall and it works so much better. and they have the calls we need here in Alaska ie(Moose, Baby Bears, Wolves.) as well as all the others used for preditors. You can change from one call to another just by turning a switch. If the wife doen't give me one for my Birthday in two weeks, I'm going to give it to myself.