My Gen 1 P32 that I bought 20 years ago was 100% reliable after the first 200 rounds, and after that I practiced with it weekly and put quite a few thousands of rounds through it in 20years before I retired the gun after it malfunctioned once and probably just needed a new recoil spring. The gen 1's had the spring loaded machined steel claw extractor.
Then about ten years ago I bought a 9mm PF9 with the rinky-dink stamped steel extractor and it was only somewhat reliable with certain ammo and I sent the gun back to Keltec under warrantee and when it was returned it still didn't reliably eject spent cartridges. So I sent it back to them again along with an angry letter asking them to tell me what actions they took to try to solve the problem and asking them to tell me if they test fired the gun.
Then when they sent it back AGAIN they included a note that said, Actions taken: "Replaced extractor, polished chamber." And then they sent a couple more of those stupit-ass stamped steel extractors for me to try my luck with them and perhaps even double up on them. I really liked the size of the gun for pocket carry because it's about the same size as a G42. Recoil is sharp but does not quite enter the pain threshold and is manageable.
But after all that I gave up on the gun and sold it to someone at a loss who thought they could make it work. The interesting thing is that on this forum and other forums I've heard from people who have found the PF-9's to be 100% reliable including the guy, George Zimmerman who successfully defended his life with a PF9 against a teenage thug, Trayvon Martin, who Zimmerman was holding at gunpoint for the police, when the alleged honor student and altar boy tried to grab Zimmerman's gun.
But as far as the P32's with the stamped steel extractor, once again a lot of people inducing someone on this very thread say that these guns are also reliable which doesn't surprise me because the 32 auto is a much lower pressure cartridge than the 9mm and besides that the 32 ACP is semi-rimmed and the stamped steel extractor might just be Ideal for that application but NOT for the 9mm.