Board Thread:Naruto Discussions/@comment-30201637-20161011193334/@comment-26894845-20161013034404

I hate to bring this up again, but with the Yata Mirror and the Sword of Totsuka, Itachi's is the strongest. If you disregard that, I would probably say Kakashi's. This is because he incorporated kamui into it and though we only saw the shurikens, I wouldn't be surprised if genius Kakashi managed to put the whole susanoo or just parts of it like Obito did when he was alive.