I voted Konan because I loved her final battle. Madara killing her was awesome. 2 of my favorites duking it out! It was a close one because Kisame's was bad a** too.
I would have to say Jiraiya. Bcause it just p***** me off that bad. I was heated for days and arguing with some friends about his death, I was sure he was gonna come back somehow someway(in denial). And he was my favorite character.