who among the characters you like/disliked best?why?

Well, that's a tough one. There are really only two active characters (though others are mentioned). One's a crazy murderer (Montresor), and one's a murder victim that we only meet through the killer's eyes (Fortunato).

If I have to choose--and this may say more about me than I want to admit--I'd go with Montresor. He's got energy, and he's focused on a goal. Fortunato seems like a passive dupe.