First of all, I have read all the books (including the partial draft of Midnight Sun and the left out chapters).
To me Edward is simply perfect, from any point of view one can think of (well, he is a vampire but he is vegetarian so I cannot hold that against him). I loved Bella too, especially in the first book where I found it very brave and ready to give up her own good for the sake of others (one can understand and get to appreciate Bella even better after reading Midnight Sun and seeing what Edward sees so attractive in her). Other than that, I have also liked Alice, Esme and Carlisle. Would probably have liked the others too but they didn't manage to capture my interest in them far enough.
As of Jacob, I didn't quite like him, I thought he was more like an egotistical spoiled brat than anything else (at least compared to Edward).
PS I'm not into vampire books and I didn't know about the hype around these books at the time of reading -- but I was truly captivated by the books. I found them... filled with passion (for lack of a better word), especially Twilight and Midnight Sun.