OP already made his purchase,
Whoa, whoa, easy there. You tryin to keep us from conducting our bi-monthly pump gun
argument debate?
My rankings/commentary:
Old Model 12: Even if it's absolutely beat to shreds. If it functions safely, they are still a bargain. I know of a 16 for $250 that still has life left in it as a hunting gun.
Used 870 Wingmaster: No brainer. Value. Resale. Parts. Classic. Rudy Etchen. It's still decent despite big green's efforts to ruin it.
Used OLDER Ithaca 37: Never was a big fan, but they're well made. Cult-like following. Not great for targets. Amazing value.
Bennelli Nova in 20ga: Absolute 100% bullet-proof modern machining and materials. These guns are outright SLEEPERS. Seriously, if they made the Nova in small gauges with wood, the Wingmaster, the BPS and the new Ithacas would be done, good night, park's closed.
Used Miroku BPS; Sounds like you're getting one. Great. Enjoy.
All others.
JMO of course.
Ok, bring it on.