Most anything is adequate, as long as it is reliable in your firearm.
I like Atomic Ammo 124g +p .... If your firearm is rated for it.
My 1911's seem to really like Remington Golden Sabre ammo. The bullet has a more rounded profile.
Although it is an older article, it's got some solid data here: Handgun Self-Defense Ammunition Ballistics Test
I used that data + the most important point that @LoProfile already stated about being reliable in the specific firearm I am using for my needs.