I am trying to decide if I should get a BigHorn Invisi-Nut (Barrel Nut) and use my current Savage Pre-fit or get a Proof Research Bull Profile Barrel and take it to a gunsmith for a traditional shouldered barrel. I have the ARC BarLoc now but I saw little information on the POI problems - I want to get something reliable that I can trust over time. I don't know how much inferior a barrel nut is to a shouldered barrel but I don't want the possibilities of a BarLoc problem again, I plan to keep this setup for a while. I want to switch my Timney CE to TT Diamond and looking for feedback on Athlon Ares ETR or other suggestions. I am hesitant to get another ARC product but looking at the ARC m10 Rings.