I got a job offer to do government contracts and I have the option to provide my own firearm. I'm choosing .45 as it's the best for stopping power as I most likely will not be trying to shoot huge distances while on duty. They gave us the option to choose 9mm, .40, and .45 caliber. What's everyone's opinions with S&W M&P .45 series, used a .40 version back with a previous contractor and the grip is extremely comfortable. After S&W I can't stand how Glock fits in my hand. For $600 or less you can pick one up and I figure that is a heck of a deal for a quality .45 pistol with tons of aftermarket support.