Everything Enneagram is my favorite book on the subject of enneagram, which includes descriptions of the types with wing subtypes.
Susan Reynolds talks about what it's like to love the different types. She gives a brief overview of Jung's theory and how it ties into the enneagram. She also talks about what types look like in the different stages of health and what being in the pinnacle of self-actualization looks like.
Here's a link to the book at Amazon.com:
The Everything Enneagram Book: Identify Your Type, Gain Insight into Your Personality and Find Success in Life, Love, and Business: Susan Reynolds: 9781598692761: Amazon.com: Books
If you've read the book, please post a review in this thread. Thank you.
Edit: I added a poll. Please vote!