I need a new clutch and just debating if the 4 pro is worth the extra money.

4 weights vs 3, a little tougher , tuning the 4 arm clutches you can start with 4 equal weights and tune by adding or taking weight from just two arms. Some guys think they even get better "feel" having the weights mixed and can dial in a better setup? Something you can't do with a 3 arm clutch.