My favorite is a Rocky Top Game Calls crystal over slate...when paired with their custom striker, the sound is top notch. Next to that are two mouth calls...a Rocky Top ghost cut and a Primos "Will Primos signature" call. I have a bunch of calls that work, and about all calls out there will be effective at one time or another...I have an older friend that still does most of his calling on an aluminum can. But, those I listed at first are my favorites.