I avoided this topic till I have completed all the routes, but now I can say I have 100% route completion
My 3 votes are, in order of favorite to third most favorite:
Lesteena and Aselia far and away my favorites. Seeing as they are #3 and #1 in this vote, I don't really need to expound why I like them. However, I do have to ask why the heck did Lesteena get the short end of the stick in terms of ending? Its totally unfair she didn't get to be an Eternal.
And its funny, but one of my best friends pointed out to me that the characters I like tend to get the short end of the stick for endings. For another example, Akiha Tohno in Tsukihime is my favorite in that cast, and she was the only one that didn't get a Good Ending (till the bonus material). I have to agree with him. Its frustrating.