Welcome to the forums. You will get a mixed response to this question. I say 50-60 is plenty. A 60 lb bow maxed out will kill any game animal in North America provided you put the shot where it needs to be and are using a sharp, quality broadhead.My bow is a 70 lb. model only because thats what was available. Had a 60 been in stock I probably would have bought it. Some will say shoot the highest weight you can comfortably draw back. I don't think thats neccessary. If you can, go to your local pro shop and shoot several different bows in different draw weights.