I wouldn't say our #1 is the smartest- she works hard, but I don't think she has any real joy in learning- judging by a few comments she has made. I don't think her personality is really spectacular, but I don't know her well. She's nice like white bread. One great thing about her is that she never cheats, which is a hugely popular thing among top tenners and honors/AP kids.
The person I'd say is truely the smartest is nice to everyone, generally a really fun person, who works hard and is honestly interested in her classes. You seriously can't help but like her. And like #1, she actually has morals. I have serious repsect for people who don't let others mooch off of their work.