Best mouth call is the Johnny Stewart line. I have all their PC calls. PC-7 is my favorite, it is a high pitch cottontail sound, PC-3 is more of a jackrabbit call and the PC-1 has a plunger at the top to vary the pitch, so you can essentially get both jackrabbit and cottontail sounds. Also, your not limited only to rabbit in distress and mouse squeek sounds, they make good chicken, racoon or even fawn in distress sounds, you jut have to play with them and practice alot.