I love the Glock 27 .40cal. Load it up with Corbon 135 grain hollow points and you have one hell of a fire power package in a small size. However if you don't mind carrying large, A HK USP in .45 is an awesome gun. I have both of these and I love them. I have a USP Tactical which is a very nice piece of machinery and shoots perfect out of the box. My Glock 27 I use in the summer months. I recommend you shoot the type of gun you like before you decide. After all we are all different.