Personally, Nick is my favorite(: I lovee his voice! To me, his shyness is adorable. He is sensitive, but I think that's sometimes just because of his diabetes. His blood sugar can get outta control sometimes, causing him to be so sensitive about the tiniest stuff. He gets embarassed a lot (= Like, when I met him I said 'you look really good today' and his face turned BEAT RED! It was so cute :] Even though he doesn't really know what to say, when he says something it's like... wow. lol. I lovee this kid. I think he's more of the cute one.
He's so strong with everything that he does, with his diabetes. Especially getting on stage almost every night.
Hope I helped :]