I prefer mouth calls because you can do excactly what you want when you want. A good open reed call can mimmic any sound you can possibly imagine. I'm a huge fan of the "Hot Dog" as well as the "Red Desert Howler". I do use a e-caller as well, mainly when hunting alone since it's kinda hard to use a mouth call and be ready to shoot at the same time or sometimes I just get downright tired of blowing a call...