Shotguns aren't even close to being affected by any discussion of bans. They'd be the last on the list to go.
I'm assuming you're talking about sporting clays. Trap pretty much requires a trap gun if you want to score well. Skeet can be easily shot with a clays gun, although if you want to consistently shoot perfect scores, a skeet gun is a plus. Now, having said that, my buddy's 68-year-old father comes with us every once in a while. He has an old Benelli 20 that looks like it's spent it's life in the open bed of a pickup truck. I wouldn't gibe $100 for it. He literally cleans our clock with it every time. We don't even get close. he always tells the same joke- "You know what the best thing you can buy to make you shoot better? Lots of ammo".
As far as a clays gun, you need one that's clays-specific. A field gun is way too light for shooting a round of clays. Field guns are made for shooting a dozen times in a day. Shooting 200 or 400 rounds through a flyweight 12ga will turn your shoulder to hamburger. The fit on a clays gun is going to be different and virtually everyone prefers a bit longer barrel for most courses.
The best advice is to get fitted. Go to a shotgun-specific store and try every one they have. Have a pro check the fit. Adjustable cheeks and buttstocks are worth every penny- unless you can spring for custom fitted woodwork.
If you're gun doesn't fit, you'll break far fewer birds. Bottom line- brand doesn't really matter. If it's a quality shotgun, they all do the same things. I actually shoot better with my Beretta Gold than I do with my Perazzi.
