We used to buy LC from gibrass.com. But once we hit well over 100,000 cases we called it good and have been since then.
I shot up quite a bit of PMC also, with off center flash holes but that stuff shot knots with our loads too.
We only ran commercial once in one of Carolyns guns that was a bit finicky chamber, and we ran RP nickel in that one but for the life of me with an AR I just had more than enough accuracy to win, even at nationals, with LC brass and never saw the need for "commercial" brass.