Rorenoa Zoro: He's my favorite character. I think he'll always be. When he doesn't do a lot for a time (like now) others tend to get close to him, but I still always put him first. He's just pure badassery. I know many are not entirely happy with how he turned out post ts, but I couldn't care less. I still love him. If anything, he became even more badass. And I actually have to admit, I do like the more serious characters way more than the funny ones. Least of all the ridiculous once. (Reason I never liked Franky!)
Nico Robin: Staying with the Straw-hats, she's my second favorite SH and favorite female in OP. I also really like Sanji, Luffy and Nami… But I love history, and when I was young, I wanted to be an archeologist myself. What can I do?
Sir Crocodile: I can't really explain it. He's my favorite Villain and favorite Shichibukai. I guess I like the badass once, but I only really liked him, when Impel Down started. Only when I rewatched Alabasta afterwards did I start really liking him. Guess when I was younger I just didn't care for Villains or Antagonists that much. Still don't for the most part... Don't get me wrong, there are some amazing bad guys/ former villains: I really like Dofla, and Buggy... and I surprisingly found myself loving Caesar Clown... But I never really cared for most of the early villains, not even Rob Lucci or Eneru. Croc on the other hand is just awesome. Especially since he's more of a antihero/Antagonis/don't really know where he's going kind of guy... Speaking of Caesar:
Caesar Clown: Yeah... As soon as WCI is said and done and we know where he's going, I'm still stubbornly putting him into my Top 10. I'll quite certainly downgrade him later, but at the moment I very much care for him. Don't get me wrong, I'm not one of those who wants him for Straw hat (at least not anymore), but I still demand that he'll be saved and not left to rot with an angry Big Mom! I worry for him and the worries keep him very prevalent in my mind, even if we haven't really seen him for a while.
Smoker: I always loved him. Since his first introduction. There was a time, he was my number two, very very very (sometimes to) close to Zoro. He lost a bit post ts... I'm a bit disappointed in how weak he seems to be... and hin his new style honestly. I liked the wild white short hair better than his new military style. Also thought the whilder hair made him look more like the rebellious marine he's supposed to be. I still like him though... Or I still have hopes in him.
Eustass Kidd: I immidiately liked him in sabaody. Favorite Supernova (aside from Zoro and probably Luffy). I'd just hope we'd see more of him. I also think he should start showing us some feats. I mean I can't just believe he's as powerful as Luffy without seeing some proof. Plus I'm really worried for him. Yeah yeah... Sure he's not going to die... I'm still worried.
Iceberg: hahaha... I don't know.... when I rewatched Water 7 a few years ago, I just started loving him. And I never stopped.
(To complete my top ten, the other three would probably be Nami, Luffy and Mihawk... but that varies from time to time.)