I have a hard time choosing favorites but she encompasses almost everything I prefer for characters by design.
This design specifically from a Doujinshi is hands down my favorite.

I don't understand why anyone would want Homura to top then. She is the perfect sub

Recently read a Madoka doujinshi that was ok. Had some weird, gorey moments and some cute ones.
Best thing is easily pic related, without a doubt what I want for Homura when the series ends.