I voted for Seven. She`s very attractiv and Jery played her very well.
B`elanna is close second. I think she`s beautiful and I very liked her character.
I can`t say that I find both Janeway and Kes very attractiv. Kes is nice, but I( in my opinion) unimpressiv and Janeway is more of a mother typ. She always reminded me of my mother.