IMO, predator and Mezz hit very differently. I ended up with a Mezz(Exceed) w/ a wx900. I wouldn't call my player 'low end' but that's totally subjective anyway.I agree, I really like the feel of the cue and not changing the butt as it looks pretty good too. Only tried two other cues from friends but both were low end cues so can't tell if a Predator or Mezz would feel different. In any case I think a LD shaft would benefit me. I will try to follow the advice and find someone who sells these shafts and perhaps can try before I buy.
I cut my LD teeth on the original 314 and then transitioned to the Z2. Played with that on a old school Falcon butt for a couple of decades, before moving to the Exceed.
I ended up getting the wx900 turned down to 11.5mm, to more closely match what my Z2 had become over the years. Those two shafts have now become nearly interchangeable.
The only CF shaft I've played with that I might consider buying is the 10.5mm Cynergy. All others have way more deflection then I'm a fan of. Frankly, other than the durability, CF is all hype.