1. Smoker. Coby’s Luffy love is too annoying. Also hasn’t really done anything interesting post skip. The moments when he stood up for himself pre-skip were good, but we aren’t really seeing much interesting about him now that he should be quite secure in his own strength. Maybe once Garp is finished it’ll push him.
Meanwhile Smoker always has to face up to genuine challenges as a character, dealing with the corruption from the World Gov and the Marines. Also has a far better relationship with Luffy, with more mutual, begruding respect than hero worship.
2. Smoker. Coby’s okay, but Smoker’s in my top ten OP characters.
3. sigh Coby. I dunno what Oda’s really going to do with Smoker now but Coby’s been in the series longer (than pretty much everyone mind you), he’s the one trained by Garp and he’s the Hero of the Marines now.
Smoker and Blackbeard are the best rivals Oda’s given Luffy, but it just doesn’t seem like Oda’s interested in Smoker anymore. Which is a real shame, especially since the Luffy Smoker rivalry is far more like Roger Garp than with Coby, despite Coby being Garp’s protege. Hopefully Smoker’s absence is for a reason and there’s something big planned with Kuzan later on. Don’t care if Oda gives him a totally nonsensical powerup either.