Buy a 12ga , install one of those recoil management systems in the butt stock. I'd buy / cry once and go with a Benelli or Versamax. Good aftermarket support for both , with lots of options. I have a basic 20ga for the spouse. Without a lot of tinkering there's minimal aftermarket support, especially when it comes to "tactical / defensive" . There's also a wider range of ammo, selection wise for the 12 over the 20.