Most of our recoil elimination is coming from the JP Muzzle Brake, our own prototype shroud + modular weight system - all the other additions we view as a small piece towards the overall goal.
I too have heard that the Enindine setup is not producing the just "out of this world" performance increase that most people expect. However we still feel it is a nice upgrade to go along with all the other upgrades.
Our other major upgrade is swapping out the DPMS lower and upper receivers to the MA-Ten Mega forged set.
Thanks for the heads up on the JP product though - I had not considered that. Hmm...

Not very thrilled with the Enidine at the moment, if anyone wants to try one out at the cost of shipping, I'll happily put it on loan.
Have you considered selling it? We like good condition used parts in prototype units.

PM or E-mail me if its something you want to consider.