I've made bows from osage, white ash, hickory, elm, red mulberry, black locust, hop hornbeam, maple, black walnut, probably a couple more. I'm also working on persimmon, cedar, and dogwood at the moment. I like them all, and they'll all make good bows. I do think that osage and locust have a bit of an edge here in the land of constant humidity just because they're oily as hell and don't soak up as much moisture.