I'd highly recommend something commonly available, reasonable in price, easy to maintain, lightweight, easy to shoot and reliable. A used Glock 19 in 9mm. Stay away from the 1911 for now, it's heavy, complicated and bulky. There's a reason a multitude of US LEO's have transitioned to the Glock over the old standby the revolver. If you look hard enough you can probably find a used G19 for around $400 and maybe less. They just don't wear out...