I highly recommend Gold Dot 124+P or the Corbon DPX line loaded with the 100% Copper Barnes X bullet. These are both excellent rounds that excel in the FBI testing protocol. Because of the Speer Uni Cor bonded bullet and the 100% Copper Barnes X bullet jacket core separation (a leading cause of bullet failures) is nonexistent. I get my Corbon from Midway USA or Cabela's and the Gold Dot's I buy in 50 round boxes from SG Ammo out of Stillwater OK.
NOTE: There is also the Corbon Thunder Ranch DPX line but as far as I can tell they are identical to the regular boxes. Are they pricey? Yes! But you get what you pay for and when it comes to my personal safety and the safety of my loved ones only the best will do.