I have both s/s, and o/u and I like them both for different reasons. Truth be told, though I more often than not carry my s/s in the field, I shoot an o/u better. I think I know the reasons for this.

My 12g o/u fits me perfectly, and is a heavy gun, so it swings itself once I start it. It's a cheap gun, a Stoeger. Because I shoot it well, and have shot a lot of game with it I can't seem to part with it and doubt I ever will.

The s/s is a Beretta 20g silver hawk. It's a good looking gun, and I like the 20, but it is an ill fitting gun. I need a bit more drop in the heel. as a result I don't shoot it well.I'm having the stock fit with an adjustable butt pad next week. Hopefully this will change my current shooting trend with this gun.

My other gun is a 28g Gamba o/u. The interesting thing about this gun is that it too is ill fitting, but I still manage to shoot it well. Is this because it's an o/u? I don't know. Could be because it's so light. Hunting primarily grouse and woodcockI do a lot of snap shooting, so a light gun in a small guage could easily be shot effectively with lousy form.

If you can shoot a lot of different gun to see which you like, or which suits your shooting style. Also, pay attention to gun fit. I am learning the hard way that gun fit really is everything when it comes to shotgunning.