The Ithaca and the Remington are the same design. Remington bought the patent rights some time ago and made some slight improvements. The Ithaca's were notorious for having to be really clean to shoot reliably. Not a terrible thing just a little aggravating. The Ithaca's are no longer made just the Remington's, but you can findused ones.Browning makes the BPS and the Gold in a 10ga. That about limits your big bore choices. Benelli nor Beretta ever got into the 10ga game.