Quote (Boost4U @ 10 Jul 2015 13:47)
Fate/Zero is probably the best in the genre of anime.
Samurai Champloo a close second.
But the best sword fighting anime is no doubt: Stranger: Mukou Hadan - it's a movie. Give it a watch.
Vouch these.
Adding:
Samurai X: Trust and Betrayal
Shigurui