I would focus on the ones from true game gun category with nice handling. Here is the ones I'm familiar with: Birmingham-made BLNE like GE Lewis, BSA, ........ Jap Sakaba 'Royal' (copy of W & S 700), Sakaba 100, IG Modelo 30, pre-WWII German guns like the Sauers in field grade, post-WWII VEB-made BLNE guns,.....
Let's face it, it should come close to or best 12 GAUGE Franchi 48AL semi-auto. I just don't think entry level one can best or equal the 20ga version!