ive also enjoyed the enneagram method, where i am an 8 wing 7, biggest fear: being controlled. i also the enneagram method as it talks very much about high functioning (ie when you are at your best) or under stress, how your responses change.
i find these things like tarot ... they are less interesting as hard science, and far more interesting as giving verbs and nouns to emotions. basically making concrete what wasn't before.