Not much. I like a more r-d in shorter bows. In longer bows, I like a sexy mild r-d. As for why I like it that way. More r-d makes the bow shoot more like a recurve. So a shorter longbow with lots of reflex will shoot more like a recurve.A mild r-d, on a longer bow, will give you the best of both worlds. Not quite as fast as a recurve or a radical r-d longbow, but much smoother. Or that is my oppinion in the bows I make.