I enjoy all of them, although recently werewolves and spellcasters are my favorites.
Werewolves are hands down the best, simply because they can become very powerful, but always have to deal with hardships like the fury and full moon. Sure, it can be somewhat less painful with perks, but they not always succeed (regain control, for example). So I like them because of the balance. Vampires can be immune to the sun and weaknesses can be soften with reward traits, like carefree deleting fear of the sun tense moodlet. Wizards are humans with magical powers and, except for occasional curse, they have no hardships. Werewolves will always have to deal with the fury and this aspect makes them superior imo.
