I had a PF-9 for ~6 months. It proved unreliable for me (to many FTF and FTE's). I sent it back to the factory (great service BTW) where they cleaned up the feed ramp and replaced the extractor and I then traded it away.
I now pocket carry a Ruger LCP and couldn't be happier. 500+ rounds without a hiccup. With the new factory 7 round mags, I carry 7+1 in a smaller more reliable package than my PF-9.