Growing up (early 70's) I had the opportunity to handle and shoot both revolver and semi autos. During those formattable years I gravitated to the six shooter. Today I am still a wheel gun guy. With all that said. I do enjoy several semi's. I own and carry in my rotation a Shield 9mm. For me I think it's the best small sized 9mm out for ccw. Had a G19 I liked. But then found the SD9-VE to be a better fit and shooter. I had a wonderful Springfield loaded model 45acp that I let get away. But for the semi auto I have become a true fan of the 9mm. I dont belive you could ever go wrong with carrying this caliber of weapon.