Naruto Shipuden kinda sucks only one Good arc the Pain arc and some few cool moments in the 4th ninja war . After that the rest is kinda mid with Bad Pacing and to much filler.

While evry arc in Naruto was peak from A to Z.

Naruto Classic also had tons of filler episodes. Cut all the filler episodes and you're good.

Aside from a slow start and the dragged out end I still prefer Shippuden. Classic is fantastic but I just love Shippuden more. It build upown every aspect from it's predecessor.

(And aside from discontinuing side characters arcs. I don't like that part. But Shippuden got us a lot of new fan favorites. That makes it a little less painful. No pun intended.)