P3AT. I've had direct experience of 4 KTs. One P32 (mine,) one P3AT, and two P11s, (all 3 owned by a friend, who was one of my best shooting buddies, GRHS.)
Anyhow, of those four, one of the P11s required a fluff and buff to get working well. The other three have all been winners.
Oh, I almost forgot. At one point he replaced the polymer guide rod with an a steel one from KT. The gun never worked right again, until he put the plastic one back in.
~~~Mat