After my daughter hit with this bat she just grinned and said, "they named this bat right; it is INSANE!!!" Bat has a lot of pop with no complaints of vibration even with miss hits. This her first Demarini bat and I was a bit nervous about ordering , but the 30 day money back guarantee convinced me enough to order. Her first tournament with be her ASA nationals so that will be a good test. My daughter is very happy with the way the bat feels and swings.