I never paid much interest to Tora, nor did I really care for him... Though, he was more normal natured than Usui was. (He acted just how any average rich boy his age would act. I'll give Hiro props for that. The way Usui wasn't so stuck up kind of made me tilt my head at him like 'what...?')
Though, another thing about Tora (That to me was a huge turn off) was how much of a control freak he was. I don't understand how he had such a bad first impression on Misaki when they first met or in the protagonist's case, when she first realized how he really acted, Basically a demanding pervert. But I can see how somebody would like him like in your case. (Besides, be happy you have somebody to love. gonk -forever alone-.)
As for poor Usui though, give him some props for at least a few things... For one, if I could take any character trait from Usui and put it in what I think a perfect boyfriend would have would be his persistence. (Sorry ladies, looks are great and all, but they shouldn't be your first priority. -_-) Man... Usui was persistence like it was his job. No matter how many times Misaki tried to 'reject' him, Usui just kept on going but it seemed he tried different methods that still sticked to his regular personality without making things seem off. And of course, over fifty chapters later he achieved what he was striving for. Pats for Usui. My reason for liking Usui so much is for the most biased reasons though. He just does a great job at satisfying things that I like to see in a guy. For one, He was English, (Okay, am I the only one who thinks he's just more than a quarter English? I mean for heaven's sake, the only Japanese thing about him is his name...) I have a big thing for English guys besides their accents. I don't know what else there was.
But he wasn't the only reason I loved Kaichou... I really loved Yukimura. He was adorbs... emotion_kirakira
So was Suzuna. She's like the little sister I never had.