I think it comes down to how you want to activate it, they all do it differently.
The Crimson Trace activates with your middle finger as you grip the gun.
The Lasermaxx activates with your trigger finger if you want to.
As far as reliability...........I think they are both fine products, and each has their followers.
I personally have the Lasermaxx.........and I'm very happy with it.
Steve