During my daily nerd ponderings, I was wondering what would be Sasuke and Naruto's strongest attacks that they could muster (despite the name of the discussion). For Naruto I actually think that Sage Art: Super Tailed Beast Rasenshuriken would be his, even more so than the Tailed Beast Bomb. My reasoning for this is because his use of the Bijudama only incorporates Kurama's chakra. Half of it at that. While the former move uses all 9 beast chakra. Also it incorporates the skills his parents and mentor had: Kushina with shadow clones, Minato with the Rasengan, and Jiraiya with senjutsu. Not to mention he uses the Rasenshuriken form, adding his own wind power to the mix.
Having said all that, what would Sasuke's biggest strongest move be? I'd like to think that Kirin would be it but it's too situational. Plus if a Susanno could block it, then there's some degree of defense against it. As Sasuke is now, I don't think we've seen an ultimate move from him yet. What I'd like to see is combination of Susanno, Blaze Release, Lightning Release, and Rinnegan. Y'know, something that combines all of Sasuke's attributes like Sage Art: Super Tailed Beast Rasenshuriken does for Naruto. What do you think?