OMG Inuyasha and Rurouni Kenshin!

[Pirate King]

Watch both and then watch yu yu haskusho

 

[silmarill]

Rurouni Kenshin is in my top 4 favorite anime's of all time
Never saw Inuyasha.
They never animated the last manga arc though, but how Shishio arc finishes is very satisfying.

 

[Itachi Edo]

Both are awesome, though the inner-romantic inside of me gives the edge to Inuyasha. Don't get me wrong, there's a whole lot of fighting and great plot behind it. Kenshin was a little more emotional, but I thought Inuyasha was more well rounded, especially when you get to the part where Naruku revives a the group of mercenaries.