re: M&P 40

I think the more capacity thing is why people tout the 9 over 40. It really doesn't kick that much harder, and price per round isn't much at all. I got the 9 because that was what was available in my gun at the time. It didn't come in 40. All of the rest of my guns will be 9mm because I can just bring a box of ammo and they will all shoot it. No worry about mixing them up. I have a 10mm too, so I don't need to worry about mixing rounds because they won't fit in a 9.

When it comes to capacity, there isn't much difference in 16 or 17, so just get whatever one you want. If you can't kill something with 16 rounds, you aren't gonna be able to kill it with 17. Doesn't really matter to be honest