I highly recommend the CF8 -11. It will swing the closest to the Bustos and they have more than enough pop. My daughter has progressed from the CF5 to the CF7 and has a CF8 on the way. She is about 50/50 slapping versus full swing depending on the defense. She can swing a -10 but the -11 gives here more barrel control. She has no problem getting down a bunt or poking on over third. If they play up it has plenty of pop to hit it into the gap.