I've been checking out the specs of OOO/OM size acoustic guitars, major manufacturers, small builders, and luthiers and they have varying body depths: 3 1/2, 4'', 4 1/4 , 4 1/2, 4 5/8, 4 3/4. How do these differences in body depth affect the tone of an acoustic guitar? I suppose, how does body depth affect a guitars volume? Do you guys have a preference? If so, please, tell me why. Thank you.