I just played this ball today for the first time (not even really sure if it was X or S), but wow, very noticeable penetrating flight, almost like another gear. When I was expecting the ball to start descending, it went a bit more. I'm a guy who never much cares one way or another about the ball I play, and for the this one to jump out at me is really something. Appeared to be very durable, certainly was very firm feel and click with the putter. Just had to post,,,,, that first 15deg utility shot blew me away.