Luffy vs. Lucci, easily. It had SERIOUS HARDCORE, plus Lucci is just such a freaky killin' machine that you couldn't help but root for Luffy. Plus, I just loved the red herring LUFFY HALF-ISSUE GEAR 3 VICTORY? that turned into a panicked battle across ships as the bridge was collapsing for the rest of the Straw Hats. Also, Luffy shrinking from Gear 3 and Lucci hunting him down was LOLZ.
I also liked the Lucci fight because Lucci seemed mortal and not a seemingly impervious Logia superbeing like Crocodile and Enel -- Luffy's Gear 2 and Gear 3 strikes clearly hurt the fuck out of him despite his weird tekkai restoration shit. He and Luffy just traded their best attacks like motherfuckers and at the end, only Luffy was standing (sorta). TWO MARTIAL ARTISTS DUDES KICKIN' EACH OTHER'S ASSES.

The full-page scenes were awesome -- Lucci's Six Kings Shigen combos from his rokushiki shit had pretty much perfect execution in terms of the sense of the dynamic. I was just in awe over how he laid out those spreads. NO-ONE DRAWS ACTION LIKE EICHIRO ODA.

NO-ONE. I'm a total Oda fanboi, though


and they saved Robin
Zoro versus Kaku was good, and I liked that Oda went for comedy in a Zoro fight this time instead of LOLZ MISTER BUSHIDO SERIOUS. Sanji versus Jyabura was great, too, 'cuz poor Sanji had been getting his ass beat so bad on the train and when he ran into Califa.
FRANKIE