Re: 9mm defense rounds
IMHO, reliability of function in your firearm is the most important thing. I’ve never had any issues with factory 9mm, but I’ve had a couple premium factory cartridges in .40 and .45 that would not function in some handguns. Whatever you pick, buy a ‘test’ box and if you like it, shoot <span style="text-decoration: underline">at least</span> a hundred of that to prove reliability.
FWIW (which isn't much), I load 124gr golddots over a stout charge of HS-6 w/ Win SP-Mag primers.