RE: Box Call?
I just picked up a Quaker Boy Hurricane and was very impressed. It is fairly highpitched but with a little practice, you can get a good range of pitches out of it. And, it works wet.
Otherwise, it's hard to make a bad turkey call. Kind of like deer grunts. They make all sorts of sounds.
With any call, don't go hog wild with it in the woods. Turkeys will come in quiet sometimes.