Beretta owns Franchi, Benelli, Stoeger and Tikka.
Franchi I12 and Diamond shotguns use Benelli's inertia system. The 712 and 720 are gas guns.
Benelli is top of the line. The Franchi is the middle class. Stoeger 2000 series are cheap due to be manufactured in Turkey,but still using the Benelli inertia system.