I am in the middle of a pistol/sbr build on an Aero FDE gen 2 lower and realize that most of you guys are going to say to use Colt LPKs or KAC or whatever but since I'm going to be using an ambi safety as well as a different trigger and mag release, is there any reason to go with the more expensive LPK from Colt or is Aero, PSA, Anderson etc just fine? What are the more "technical" advantages of the Colt, KAC, BCM, DD, LMT etc LPK's as opposed to the Aero or even just something like joeboboutfitters.com or righttobear.com cobbled together LPK's? Is there really any noticeable difference especially in what will be an 11.5" "hard use" pistol/sbr in 5.56?
Any opinions are appreciated but the ones of you on here with the technical knowledge of endurance, heat stress capabilities etc are who I am aiming for.

Regards,
Darrin