If you are serious about smooth drawing, especially with shoulder trouble, I think (GASP) that a Mathews bow is very hard to beat in the smoothness category. Singla cam bows are inherently easier to draw just by design, plus the Mathews sincle cam is rounder than most. Take the Monster or Z7 out of the equation since they kind og go against that statement. A Switchback-type bow will be an excellent choice. I've never been a Mathews, only Bowtech for me, but my left shoulder is about done, so i'm also in the same boat. Any of the new agressive cam speed bows are going to be tough to draw, the speed is coming from somewhere. They may be "smooth" but they all have a hump in the cycle to roll the cam over.