@PokemanZ0N6
For me, Dressrosa. Say what you want about the animes pacing, but my goodness was the arc absolute peak. From having an S tier villain with Doflamingo, Legendary backstories (Law/Corazon,Doflamingo,Sabo,Kyros,Senor Pink) and the emotional peaks this arc had. Oda was cooking fr.