OB Pro (formerly known as "Classic Pro") here.
To be honest, I never liked the hit of any LD shaft -- especially the Predator Z^2 -- because the hit reminded me of linguini or something.
Then one day, I tried someone's OB Classic Pro (now known as simply "OB Pro"). I couldn't believe that an LD shaft could have such a solid hit -- just like a regular maple shaft -- except it was consistent. And, it felt even better than the flagship OB-1
So to the OP, try one of the OB "Classic"-series of shafts, whether that be the Classic itself (12.75mm), or the Pro (11.75mm). You'll see what I mean -- it's that hit you were looking for -- markedly different from the Z^2.
-Sean <-- likes pasta on my plate, not on my cue