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First, I'm going to chuckle at "ambi controls" and everyone recommending a Glock. They don't even have single side controls!
9mm loaded with a decent jacketed hollow point is an effective SD round. Lots of handguns chambered for it. Finding one that fits your hands and points well for you will trump many other factors.
Bobson - Oh whoops. Missed the ambi controls requirement and recommended a G17. I guess the OP missed that requirement too, since he listed the same gun as a pistol he has (or at least had) in consideration.
Of course the Glock has ambidextrous capable controls, three of them in fact. Those controls are the magazine catch, slide stop lever, and trigger. All three can be operated with either hand. With the right hand the thumb operates the magazine catch and slide stop and the index finger operates the trigger. With the left hand the index finger operates all three controls.