See what cops in your area are issued. Chances are, its decent ammo that meets the basic requirements for defense. It amazes me that one Department will swear by a particular brand of amm, next bid, somebody comes in cheaper and its decided that THAT is better ammo. Not to mention, after exhaustive testing, it seems that the results show that lots of different agencies can't agree on what the best round out there. We used to issue CorBon 135 GR in .40. It actually worked pretty well until an Officer had to shoot through a vehicle. The rounds came apart. Now we issue the Gold Dot 180. Is it the best? I dunno. But, it feeds reliably and is controllable.