This episode was certainly entertaining. Honestly only three things really bothered me, things that could have easily been avoided:

Meep Meep! Road-runner-Pain was a bit much, especially when you can see him later not moving his legs but simply flying with his feet skimming the ground. Would have been far better to go straight to that. We've already seen him fly, so it is not too far a stretch. Then again nobody seems to complain when the green beast loses his legs in a blur of motion. I think if the road runner didn't exist, this would have been more bearable.

The initial face-melting inertia effect was a bit much. I actually liked the stance and facial expression made when using 'Planetary Devastation'. The nose bleeding as well really fit in. The initial one though just seemed like crappy animation.

The amount of damage Pain was able to absorb with no effect. Specifically being hammered into the ground was, while funny, a bit much. He must have one hell of a spinal column to pull that off, or very sharp feet. Being crushed with little to no effect would have been more plausible. Love the way he used his flying ability to pull himself out of the ground.

Naruto seemed to do quite fine. All of his moves we've seen before in some form or other. We've seen the reaching hands and shape shifting effects against Orochimaru. We've also seen a stronger version of the fire ball effect against Orochimaru (when he ate the huge clump of chakra then vomited it back out in a blast of fire): not a far stretch that he can shoot smaller balls of fire at will, or maintain a precise continuous beam for a short time. Only problem I have with him is likely to be shown next episode: his flame retardant clothing!

One thing nobody is talking about is where Pain stores all his metal poles. I have my theories but there aren't many places you can cram almost two body-lengths worth of metal pole. I suppose he is a masochist, but is he really that big an asshole?