I think Sasuke has some of the best fights in the series out of any other character, especially in Part II. Not only are his battles action-packed, but they are also very strategic and use a nice variety of abilities. Also, I think the anime has done a stellar job with nearly all of his battles (if you ever notice, it seems like the animation studio always uses the highest quality of animation for his fights). That is why picking #4 was so challenging! What does everyone believe is the best fight Sasuke has been involved in considering the following categories:
1. Best Action
2. Best Strategy
3. Best Drawn
4. Best Animated
5. Favorite Fight (Part I and II)
6. Most Anticipated Fight to be Animated
7. Favorite War Fight
1. Sasuke vs. Killer Bee
2. Sasuke vs. Deidara and Tobi
3. Either Sasuke vs. Itachi or Sasuke and Edo Itachi vs. Kabuto
4. Either Sasuke vs. Deidara and Tobi or Sasuke vs. Danzo
5. Part I- Sasuke vs. Naruto (Valley of the End)/ Part II- Sasuke vs. Itachi (though these were very difficult choices)
6. Sasuke and Alliance vs. Ten-Tails/Obito (Host); Sasuke and Naruto vs. Madara (Host) -> (While it has not occurred yet, we all know it will be a great battle!): I list both of these fights together because they are essentially the same battle that just varies every 20 chapters.
7. Sasuke and Alliance vs. Ten-Tails/Obito (Host); Sasuke and Naruto vs. Madara (Host) -> (While it has not occurred yet, we all know it will be a great battle!): I list both of these fights together because they are essentially the same battle that just varies every 20 chapters.
My favorite would still have to be Sasuke vs Orochimaru in the forest of death. It shown a perfect display of being pushed to the limit upon being backed into the corner, because he knew every aspect about how powerful his opponent was but didn't know the limits of his opponent's skill level. He put the most emotion into this battle than he did. Not only because he wanted to survive, but to not look like a failed coward in front of Naruto or Sakura(even though Sakura wasn't doing anything that entire battle).
He did not fight Gaara for those reasons. He fought Gaara, because he was ordered to capture/kill him by Genma. Also Sasuke wanted to prove his own strength and limitations. Like Shino said, he wanted to finish his fight. His teammates were nowhere in sight when he battled Gaara.