After 20 years of CCW I've settled on the G19 as the best size pistol that I can shoot well. I can conceal a 43 or a Kahr P-380 a lot better but I can't shoot them as well. I shoot my G-36 possibly better than the G-19 but prefer the extra firepower of the 19.

I've pretty much given up on smaller pistols,not because of capacity but because of shoot-ability in my hands. I'll only carry one when I absolutely have to dress in such a way that I can't carry the larger pistol.