Welcome to the forum.
IMO, a good, reliable hollow point.
Most "name" brands should work.
"Ball" ammo has a bad rap for overpentration. The military are limited to using ball by the pacts the US has signed with other countries on military ammo.
Civilians are not limited to the same restrictions and should "cheat" as much as possible in self defense.
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)