If you are narrowing it down to choose only one gun to buy that you will carry, then choose the largest caliber and the most capacity that you will never leave at home on your dresser. This may be a NAA guardian or a S&W Model 29.
Since I am not limited to one handgun, I may at any time be carrying one or more of the following: large frame DA .357; medium frame DA .357 revolver; .40 subcompact; 4" .40 semiauto; .32 acp Tomcat; Semi-auto 9mm. I hope to add more handguns to the rotation to fill in the gaps in .380 and .45 acp. and maybe another .357. I choose my handgun to fit my mood and my attire.
Since I am not limited to one handgun, I may at any time be carrying one or more of the following: large frame DA .357; medium frame DA .357 revolver; .40 subcompact; 4" .40 semiauto; .32 acp Tomcat; Semi-auto 9mm. I hope to add more handguns to the rotation to fill in the gaps in .380 and .45 acp. and maybe another .357. I choose my handgun to fit my mood and my attire.