As a beginner to firearms, I've been asking some basic questions & learning a lot thanks to the many replies. I know this is probably a can of worms and I don't know if this is the right forum to ask this question, but what do you all recommend for the best 9mm self-defense ammo? I carry the Glock 19 Gen4. After watching the YouTube Channel of TN9Outdoors and some other random articles, so far my conclusion is the Speer Gold Dot 147 grain. Also the fact that most police use this ammo pretty much clinched it for me. But I know that people swear by & love the Federal HST 147 grain as well. TN9Outdoors & Hickock45 both seem to crown the HST as their favorite and carry it regularly. I also know that the Hornady Critical Duty 124 grain is another highly recommended one. Obviously shot placement, training, etc. are much more important than what type of ammo one carries. I realize that the differences between these ammo may be so small that ammo selection probably doesn't really matter. But all things being equal, is there a favorite/recommended ammo that all of you have? Thanks in advance for all your answers.