A good self-defense round can mean alot of things. I assume your talking about hollow points at a good price.
I carry Winchester Hollow points (15+1) in my Ruger P95. When I carry my spare mags,one withWinchester Hollow points and one withregular Winchester White Box(WWB). 41 rounds total.
A good hit with a cheap round will do more damage than a whole magazine of the most expensive ammo, if you can't hit what your shooting at. (Just a thought)