I'm an NRA instructor and member of the Assoc. of Defensive Shooting Instructors and teach basic on up to advanced classes and have also taken courses at Valhalla Training Center, I.C.E, Thunder Ranch. I only recommend a pistol with out a manual safety. The Glock, M&P, XD and Rugers are the only guns I recommend for a defensive pistol. You can debate this but in real life safeties get you killed. I see it in classes all the time when people F*** up the safety and fail to get the shot because of it. If you cant perform(get that safety off)in a class setting under little stress compared to a real world defensive shooting, you never will in the real world and now you are dead.