Fran, for everything everyone here has already stated. I actually saw the comparison the other day with japanese actors and thought that if had the played the japanese version, i probably would have grown to hate fran
cant really think of a bad main character voice, so i suppose ill have to go with penelo, just because i dont like her in general

i liked drace, gabranth, larsa, frans sisters and marquis ondore, vayne was nice too
i disliked migello and doctor cid's voices