As Soybomb says, the best ammo is what feeds best in your gun and what you can shoot the most accurately with. Realistically, there isn't much difference between the premium loads.
That said, I chose Double Tap 147's. I chose them because they use the proven Speer Gold Dot bullet and they don't drive it at the spitwad velocities of the other companies. Their loads perform nicely out of shorter barrels and run at lower pressures than many of the other brands. The prices aren't bad either for a premium load.