Since you've posted this question in the waterfowl forum, I'm guessing that you plan to use your shotgun for ducks (geese?).
Pumps work great, and have a long repuatation for durable performance in the face of brutal use & abuse situations. I've taken a few limits of ducks & geese in Sask with my Win. 1300. I now use a Benelli SBE II for waterfowling.
But...think of this. When Browning introduced the A-5, it quickly became a "gotta have" gun of waterfowlers.
Save a bit more, and look at a Stoeger semi-auto for a gun near the price range you've given. The intertia driven (under license from Benelli) action doesn't have a gas port to get plugged up or keep clean.
Whatever you get, practice at a clay range in the off-season. A gun's action can't make you a better shot. Practice will.