I was happy enough with my first PM9 that I bought another a year later. The first one had a couple FTEs in the first hundred rounds but has been flawless since then. I've never had a problem with the second.
However, my brother also bought a PM9 about a month ago and the first time he went out to shoot it (I was with him), after about 50 rounds the pin that holds the side panel walked out, causing the trigger bar to jam against the side of the slide. He's going to send it back for service.