Definitely, it is Kate. She's natural, courageous, intelligent and tough. I think we've got something in common.
On the second place it would be Claire- just a normal, typical girl with no special abilities or Sun- intelligent and quiet, but as Sawyer said: "A crouching Tiger has some Hidden Dragon".
I used to like Shannon at first as she was a kind of black character and I also liked Libby very much.
Ana Lucia and Juliet have never been my favourite ones.