@ Charlest, just like in my original post, for what the balls are designed for. ex..some are more midlane and some are more BE, designed for. Question was, of the balls out there, which ones are designed to give the most extreme change of direction. If you must know a style, Cranker 17-17.5 mph. 350-400. My OP didn't ask for particular bowler. Why do all these questions baffle people instead of sticking to the original question/topic. And as far as conditions, THS.