I have tried all the striker fired 9mm's and settled on the Kahr Mk9 as my personal carry gun. Kahr has by far the best trigger pull of any DA pistol I have shot and I think by this time I have literally owned and shot them all. My favorite for years was an H&K P7 but arthritis in my thumbs has stopped me from using it due to inability to squeeze cock it. I also have a Kahr CW-9 that is my second choice although slightly larger than the MK9 it is lighter due to the frame material.
