I'm looking for a new shotgun. My only experience so far is with a couple of 870 I've had for years. I'm looking for an "all around" auto loader. I know everything is a compromise and asking this gun to do everything will be no different. Is there anything that you guys can recommend that will be somewhat equally good for doves, pheasant, ducks, and clays. I know very little about shotguns but I do know that each of those disciplines typically has a gun tailored for it specifically. I'm thinking 12 gauge and up to $2000. So far I'm reading about the difference between gas and inertia and I'm not sure if I have a preference. 3" or 3.5"? One of my 870s can shoot 3.5s but I never have and don't know that I ever will. Is it a problem to buy a 3.5" gun and always run 2.75-3" shells? What barrel length should I be looking at for a "jack of all trades" type? Thanks.