My first and only classic American SxS is 12ga 28" 1930 vintage Savage made Sterlingworth. At 6lb11oz it's remarkably good handling shotgun. Much like W.W.Greener Emperor or Empire Grade it's very simple design which takes a beatin' and keeps on tickin'. I know next to nothing about the other guns you have mentioned other then Parker is most costly to buy and Lefever most unique.