Ford-Chevy. Get the one that fits/feels best and learn it.
Good defensive shotguns are way more common than good defensive shotgunners.
Become a good Shotgunner instead of just being some guy with a shotgun.
Al, back it up. Provide evidence that new 870s are junk instead of just saying so. You may want to check out a recent thread I started over on our other great BB, The Firing Line.
The thread is titled "A Challenge to the 870 Bashers". In it I offered to buy or fix every messed up 870 presented to me at my range of choice. After 5K views and a dozen pages of input vs rhetoric from a handful of bashers, no takers.
In fact, once a handful of rather vocal and unhappy folks got out of there, all input was positive.
And after handling and shooting at least 20 newer Expresses in the last year(Heck I did three last weekend) without any functional difficulties, l do not expect to buy or fix any.
OTOH, if you feel you've been stuck with a worthless 870 of any vintage, bring it by and I'll buy it for $150, about what you'll get in a trade at a shop. If it's rusted and abused, or you'd rather ship it to my FFL (Clyde's Gun Shop,410-242-6108), $100.
The ball's in your court......