And will continue to, as long as there are hunters out there looking for a better gun. But while we're here... H&K SBE, Winchester Model 12 Heavy Duck, Browning Citori and Remington Wingmaster all come to mind.
There is no such animal as the best there is. Everyone has their favorite and that favorite can vary widely even for a duck gun. My favorite is a HkSBE but is certainly not the "best there is". Its not for everyone but is perfect for me. That perfect gun for you is what you need to look for. By searching the net and having access to DHC, you have a head start at being successful in your quest.