I have a Beratta Silver mallard, 391-- cammo, synthetic stock as well as 3 inch chamber. It has never let me down, never jams, regardless of rain/mud etc.. I would spend the money and get a good synthetic stock if you plan to duck hunt. Putting a gun in the mud, rain and in a boat with decoys, dogs and other hunters it needs to take a banging around. The only downside is the gun is too heavy to carry for upland bird hunting. It patterns well for turkeys.

Bennelli is the most expensive and pretty much regarded as the Cadillac of autoloaders for duck hunters.

The Browning A-5 are good guns, it has the raised comb that you should be aware of.

Hit the skeet range often and get someone there who REALLY knows how to shoot to give you some pointers. It will pay off while wingshooting more than you will ever imagine. Good luck---