Had a glock 26, gave it to my wife. Too small. Now I carry a glock 19. Won't go smaller than 9mm. I'm 6'1 200lbs and apex carry in a raven vanguard II. I love this thing!

In my mind 9mm is as small of a caliber as I would go. I carry 16 rounds of 135r +p Hornady critical defense. I used to carry a Glock 30SF (.45acp) but I'm extremely fast with follow up shots in 9mm vs my .45 and it's a little more thin/easier to conceal.