Sometimes I feel better when I don't read as much. It seems like all the things I have done for years are things that I should be fearing. As for Winchester Primers for an AR, I use them right along with my CCI's (which everyone seems to hate around here) and my Federals (which Richard Lee seems to think are all faulty and explode in his presses). For me, it is a matter of who has 5,000 primers in stock when I go to buy them.
BTW, I have had no problems with ANY of the primers I use after thousands of rounds through my AR.