Nobody in town has these bats to try out. She is 11 and 5ft and 80 lbs. she swung an AXE bat all last season which was a 31/19 -12 drop. I was thinking a -11 with the new bat but most on this site are saying to go with a drop 10? So the Xeno is end loaded, if I went with a drop 11, 31/20 Xeno would she notice huge difference since it's considered end loaded but only an ounce heavier? I have heard a lot of good reviews on the demarinis CF8 but durability issues with the drop 11
End load will make the swing feel heavier and is a good choice for a strong, power hitter. For a younger player who may not have developed her strength yet, I would stay with balanced. My DD was about the same size as yours at that age and had a 31/11. We looked at -10's, but she just felt it made her a little slower. The -11 was a good choice for her.
DD has the CF9 Balanced right now and likes it. A girl on her team had the CF8 last year and it had good pop. At 80lbs, I don't think your DD is probably swinging so hard or seeing such fast pitching that she'll need to worry about durability.