Existential question, that
We all have our favourites. Personally I have to have Kobo Nickel with fantasy books. It just sets the mood for me. And then Caecilia for sci-fi and pulp, and then Amasis for more serious literature and non-fiction.
I just started reading Name of the Wind, so I went to the length of reconverting the epub with a fixed line height, just so I can read it in Kobo Nickel. Yes, I think I really am crazy