I'd prefer the 870, but it'd be hard to go wrong with either one. The only question is whether they're worth that price to you. And yeah, point out the wear on the ejector plate & see if they'll knock a few bucks off. The worst thing they'll say is "no."
A gunfight is not the time to learn new skills.
If you ever have a real need for more than a couple of magazines, your problem is not a shortage of magazines. It's a shortage of people on your side of the argument. -- Art Eatman