9mm is what I have for EDC. Not long after they first came out, I bought a Springfield Armory Omega, chambered in 10mm. This was around 1990.
That had some oomph to it. I liked it quite a bit, but ammo became scarce and expensive, so I sold it and bought an SA XD9 subcompact. That’s one of my
EDCs now. I wish I still had that 10 mm though…..
Mr. GG2 carried Springfield Armory both in .40mm XD and .9mm XDE for years. He just recently switched to CZ in .9mm. I have two Rugers in .9mm and in Georgia the average bear weighs 125lbs so unless you run into a monster the .9mm should get the job done.