My 10yo DD didn't notice much difference between the CF6 and CF7, and most of the other kids I talked too didn't notice much either. My DD however did say she liked how the CF6 swings better. She has been swinging the CF6 30/20 since July and loves it. Not a lot of size choices in the CF6 left these days so that may help make your decision. I also like the durability of the bat as well. Though I don't have one I know a few people who have had durability issues with Easton.