My turn,
I have ten of these mags and they had worked great. I have used them for over a year and have not had any problems with them. I used them in matches and practice without fail. I had not noticed any problems with the feed lips while cleaning.
I went to Area 3 and was looking forward to a good match (for me). I had several feeding problems during the match probably five or six times. I was just cleaning my gun and checking mags before going out to practice. Until I found four mags were cracked on the back of the feed lips and two appear to be on the verge.
I know I should have used my Wilson mags and Chips, but I wanted the mags to be all the same. I had never had problems before, so I took the PSI ACT mags.
Just ordered some Wilson mags from the BE store! Now I have enough Wilson mags for a match. Hard lesson learned, but I still had a good time and shot with a bunch of great people.