Definitely the push button box call for a beginner. The first year I ever went turkey hunting, I went armed with a Lohman call similar to this one although it wasn't called the Sassy Hen at that time.

The only calls I had on that first hunt were that box call and a mouth call that I didn't have much confidence in at the time. I used the old Lohman push button to take 2 mature gobblers my first year out. Those type of calls will call turkeys in the hands of beginners or experienced hunters. I know it gave me great confidence back then by helping me to be successful right away and that call is part of the reason why I'm so hooked on turkey hunting today!