The one thing I found I liked about the darton was the "feel" of the draw and let down.I really never cared for the harsh let down and short valley of many single cams.Sure you can make em all shoot good.The darton also had a lot more built in draw length adjustment.But now I'm shooting a bow with no cams,so what do I know

But you are right you gotta re invent the wheel er cam every now and then to sell more bows.
CB