Oh fine, I bite
Personally I would advise other than pick one of the "big four" to pick whatever shotgun you are most comfortable with, whether that be one of the "big four" or other good guns like the browning bps, benelli nova, or various autos. My thinking says you will shoot a shoot you really like more than one your just "ok" with. I would get the firearm that I am most fond of that is in my price range while leaving plenty of money to buy ammo. I personally am not hugely fond of mossburgs and the Win 1300 (although I agree they fullfull their intented purposes), try as I may I can't seems to get in tune with 870s but I think they are a great shotgun and I know several people who shoot them very well. Currently I shoot a Ithaca 37 with an 18.5 in rifle sited barrel. No extended mag, side saddle, tac sling........and its not even black. Its just a design I learned shotgunning on, used ever since I could keep the barrel off the ground, hunted every legal species in my area with, shoot countless rounds through and generally can operate in my sleep. While it doesn't have any tactical goodies (not they are bad, just not necessary), and I now shoot a nova for birds and citori for clays, its an old friend that will forever be a living part of me. So like Dave always says, its the shooter not the gun.
Dave, if you ever end up in Iowa drop me a line and I will be more than happy to take you up on your offer. Now whether I would beat you or not, I will not or can not guess but win or lose it oughta be worth the price of the coffee.
M Jager