If money is no object then that would greatly influence my decision. I'd take a brand new 870 Police with wood furniture and rifle sights on an 18.5 inch barrel. I'd put a sling on it and an ammo carrier on the butt. No lights, no lasers, no side saddles, no pistol grips.
Truthfully, I'd be happy with 870 police, 870 wingmaster, benelli nova or supernova, or mossberg 590 or 590A1.
Right now, I keep a bone stock maverick 88 with 18.5 inch barrel and a bead for HD. And I'm not running out and buying a new shotgun.