Steel is heavy, affects balance. If you LIKE a heavy, slow shotgun with a butt heavy balance, that's not a problem I suppose. One of the best handling PUMP shotguns of all time is the Ithaca 37 featherweight. The Mossberg and the Winchester are pretty light, muzzle balanced and work better for me than a heavy gun. This is one of the few things I don't like about the Browning BPS, its heavy and sluggish handling. Still a good gun, but when those early morning teal are buzzing in, it's a bit slow.
Anyway, if you HATE Mossbergs with all your being, stay away from 'em, all I can say. I won't rule out another Wingmaster some day if I found a cheap one I wanted, but I don't really need another pump and I don't care for 870 ergos. If I were to get another pump, probably be a BPS 10 for goose hunting.
If you hate something as bad as eastbank seems to, I'm sincerely glad its a mechanical object and not a person.