One of the only guns I have ever regretted trading was my P-9. I carried that gun exclusively for almost three years, and never worried about it. The Kahr was super reliable, extremely accurate for a DA gun, and man, was it ever easy to carry.
I toted it with me to fla soon after 9-11, when everyone was worried about the terrorist threat. I carried it under a tee shirt in a cheap bianchi IWB, and I honestly forgot about having it on. Never had that with any other serious pistol.
Ten years previous to that I had a K-9. It was a lot heavier than the P-9, obviously, and less reliable. I bought it used, and the previous owner told me he had sent it back to the factory once.
It worked reliably only with silvertips, ball, and hydra shocks. But, as I noted, it was one of the early models.
In fact, I was on the phone last night with Brommeland talking about having him make me a rig for a new P-9 I will probably buy next month sometime.