Best one piece for slowpitch/semi fastpitch

We play in a league that has semi fastpitch. So not the 70 miles per hour, but fastpitch either way.

We have been unlucky(?) with two piece slowpitch bats. Super hot, but short lived. We broke, cracked and lost pop on a lot of kp's, primo etc. We now have 12 inch anarchy but with very small sweet spots but also seems durable.

Looking for advice. Better to switch to onepiece bats perhaps? Balls used Diamond 375.

Thx