Has anyone shot both? What is your opinion on them good/ bad? I've shot the K9, but not the P9. I like the way the K9 feels in the hand, how does the P9 compare. How is the recoil, yeah I know it's a 9mm, but never shot a polymer as small as the P9. What ammo does the P9 like or dislike? Give me the good or bad, thanks.