Neither, they will be illegal in about a month!
Kidding, sort of. Both shotguns are dependable, and will suit you well. If they FIT. Shotguns, especially ones used for waterfowl must fit correctly. Browning is a prime example. I cannot stand any of their rifles. They simply do not fit me. But a browning shotgun is a thing of beauty. The Franchi, while serviceable, does feel quite right.
As far as other options, the Stoeger is a Benelli knock off so its actions is pretty good. I have heard good things about the weatherby sa-08, but haven't played with one so I can't vouch for it.