Naruto already knows the other half of the Rasengan and he should use it otherwise it will hurt him.
Sadly he seems to have become dependent on it.
His Tai seems faster at the very least.. even though Sasuke's seems to be better..
"That" technique was supposed to be the demon fox coming out wasn't it?
Naruto doesn't seem like he went through 3 years of training, he could have atleast worked a couple new jutsu's into the rotation or i don't know.. learned the elements behind the ninjutsu's by that point?
Of course im sure Kishi came up with the whole chakra element system after the jump but still it seems a little half baked if Naruto didn't even learn that during his 3 year training session.
I'm pretty sure all they did was go to Brothel's for three years.
On the bright side that makes Sakura about as strong as Naruto now :P