I absolutely love One Piece ,loved it since way back ,why? pirates, carefree good people, bad ass people(zoro) etc, nonetheless i have read a lot of other manga like a hell of a lot, Berserk had a deep impression  more like a scare to the very foundation of my morals ,and the last of my top 3 is a manhwa Tower of God why , the thrill that blue haired guy gives (koon) just searching for perfection.