I'm trying to select a new handgun that would be used as my primary home-defense gun (don't suggest a shotgun/rifle --I own them too but they are too difficult to use when clearing a house alone) and possibly serve as a carry gun. It must have a light rail, .40 or a larger caliber, hi-cap magazine (at least 12 rounds). Price is not an issue because I want the best available (might have to save for a bit longer but that's ok). So what do you think would be a good choice???