Rasenshuriken or Chidori

[-Hades-]

Rasengan (any form) all the way... while you can actually counter chidori using a wind jutsu, you can't actually stop the rasengan, it is pure chakra...

 

[Vincent]

chidori is a fail, (does any1 remember minato saying its no good?!?!, raikiri ismuch better, and even that doesnt compare to rasenshuriken..)

 

[Dracule]

If naruto uses Sage Art: Nonstop Gargantuan Rasengan Barrage.....whats a chidori stream or sword gonna do against that?
And lord knows what form of Rasengan he can do while in the Full-control Kyuubi form....

 

[-Hades-]

He might make a rasengan bomb xd

 

[darkfiend54]

Rasengan is better in all aspects.Chidori you pretty much have to have the sharingan to use correctly. And in narutos biju mode he could make like a spirit bomb type rasenshurien lol. O.O