We bought him the Exo -8.5 and it felt extremely light to him and he stopped swinging it. I stopped into one of the little baseball shops here in town and put it on the consignment rack. When we received the call that it had been sold, I happened to look on the rack and noticed a Exo -3. I had him take it outside and swing it, he loved it and we bought it. Two weeks later he went to a Baseball Camp at a local highschool and it came up missing.
So we went out and bought him a new -3. He loves it. I was originally concerned about the bat being too heavy but he gets it around great and it has not affected his bat speed at all. It also puts him at an advantage since next year he doesn't have a choice on the weight he swings.