I don't own a P11 nor have I ever carried one but I was just about to get one when I bought a used polymer Kahr from a member on this board. I've shot two P11s and have a very favorable experience with them. I also respect the 9mm cartridge. If I owned only the guns you listed, I'd definately carry the P11. I'd make sure all the edges were smooth and non-fatiguing.
I also am a firm believer in every gun-owner/CCWer that doesn't absolutely desipise should own a P32 or P3AT. The best example of an economical anywhere always gun. When I bought my first P32, I owned several large frame pistols (1911s, CZ75s, Taurus) and a 686. I was much more likely to always have my P32 with me than one of my beloved 1911s and that is what is most important... having the gun
with you when you need it.
I really think of 38 snubs as backup guns or carried in a coat pocket. I own a 38 and I have a holster for it but I would feel slightly less armed with it than with my Kahr.
As far as stopping power goes, my general goal is to be able to draw a weapon and fire it two to five times more quickly than the agressor can deal a fatal blow (or shot or stab...) to me. In all my carry guns, I keep at least one or two FMJs rounds at the bottom of the mag or the last shot of the cylinder. I may be deluding myself, but I firmly believe that if someone takes three to five 124 gr +P Gold Dots in the torso and a single round of FMJ to the head, they aren't likely to be able to keep up with me as I run away.
For one shot stop percentages... it's complete crap. I mean, if it makes you feel better to select a certain loading or even a certain cartridge over another that you feel confident with just because someone can make specifically chosen data prove their point, then knock yourself out... But no one will ever convince me that a 32 caliber MagSafe is as effective as 45ACP hardball against a drug-crazed agressor ten feet away from me. Never happen, never will... I have one of his books and enjoy reading the stories in them... I'd even go so far as to say I can accept the major cartridge trends... But I take most of them with a grain of salt... Maybe even a bit less.