I think you should handle, mount and swing those guns before deciding. While you can get accustomed to anything, better that a shotgun fit you to start with, than the other way around.
I have an older Benelli Legacy 12 gauge 28", which uses the original 2-piece receiver design, similar to the Ethos. I used it as my clay target gun for 2 years when I shot almost weekly. The inertia action does have more felt recoil than a gas gun. However, I did very well at sporting clays with it, and shot 100 straight Skeet with it. The gun fit me perfectly. After a year of use, I switched to 1oz loads for both sporting and skeet, and was very pleased. Always 100% reliable with minimal maintenance.
Prior to the Benelli, I used a Browning Gold 12 gauge 28" gas gun. Not a thing wrong with it, other than the mess in having to clean the action. I sold it as it felt ponderous between the hands, although it was not a heavy shotgun.
I know many shooters who like the Beretta, but they don't fit me well, and the guns seem to be less reliable than I prefer.
Regarding barrel length, don't be talked into a too-long barrel. Much of what drives new shotgun models are the preferences of influencers, who don't necessarily share your level of ability, needs and preferences. If you're not shooting FITASC, you don't need a 32"semi-auto. When I competed with O/U guns, 30" barrels were useful. They were also heavy as hell. In a semi-auto, the reciprocating action adds 4" of effective "barrel length" in terms of sighting down the rib. A 28" semi-auto is the equivalent of a 32" single barrel or O/U. I've tried 30" semi-autos and they were just too much. To each his own.
Best to try before you buy.
PS. For upland hunting I mostly have used O/U, but last year I bought a Benelli Ethos 20 gauge 26" and it's perfect. For nasty waterfowl hunting I use a camo Benelli SuperNova 12 gauge 28".
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