RE: auto vs. over and under
I prefer an O/U. I have never had a problem with them. I have friends that have auto loaders, they get dirty and don't work, or the grease gets cold and they won't cycle. The big deal is the extra shots, if the state you are hunting doesn't require a plug. If you had to have a auto, look at Benelli, they make a good shotgun. Soilarch, doesn't hurt when you turn your head sideways to shoot that thing, just kidding.
Gselkhunter