I don't know if there is a "Best 20 gauge autoloader", it like anything esle, everyone has their own taste and preferences. Having said that I just got a brand new Remington 11-87 Premier 20 ga. w/ a 26 inch vent rib barrel and weighs 6 3/4 lbs.. I love this shotgun. Its the only autoloading shotgun I own, but I'm goint to get the same thing in 12 ga. w/ a 28 inch barrel as soon as I can.