OK!

I think the best opening and ending for Naruto Shippuden are: Opening 8: “Diver” and ending 6: “Broken Youth” (Both songs coincidentally by the same band) Let’s talk about Diver first.

Diver involves Naruto falling, heading toward a vast sea. He sees a glimpse of Sasuke, and heads into the water, only to start sinking. Once it gets dark and there is seemingly no hope, Naruto’s friends help him out of the water, and he’s flying in the air. From the view Naruto is at, he can fully see Sasuke, sinking further and further into the darkness. He puts on his headband, determined to get his best friend back, but Sasuke wakes up, with the Sharingan active. He’s not going back without a fight. Naruto dives back into the water to grab Sasuke, and then the title card shows up.

I think this sums up the relationship Naruto had with Sasuke at the time, and the music just makes the fluid animation all the more great.

Next is Broken Youth.

In this world, Naruto and Sasuke are both samurai, wanted for their immense power.
On a forest path, they both meet. Looking at eachother with the side of their eyes, you can feel the tension between this fallen friends. They both get nervous, they start sweating, waiting for the other to make a move. They both reach for their swords, ready to draw if things get heated. When they were both about to draw swords, a small frog comes along, breaking the tension. These swordsman will have to fight soon, but not now. Once again, it sums up Sasuke and Narutos relationship with no words, with awesome music.