Bought this bat for my 10yr old boy who loves it (29/21). Used the 2013 S1 big barrel last year (30/10) and was a little worried about the XL1 being to end loaded so I bought the shorter yet slightly weightier XL1. Perfect fit and the amount of power generated of the S1 is big! If I would have went with the 30" XL1 it would have been too heavy. S1 is a great bat but was just looking for more power and we got it now.