@Arienette, funny that you mentioned the upatel one because that's what I was reading when I decided to start the thread. I really love that description. It also has my favorite sexual variant description which I relate to word for word.
I like how both the upatel and typewatch description emphasize the ideal self which fours believe to be the 'real' them vs the, uh, real them, and how not living up to the ideal self triggers shame, envy, and self-hatred. I think this is a chief, core characteristic of four which cannot be emphasized enough. Also, the typewatch wing descriptions are excellent.
@OrangeAppled, I've read character and neurosis and I would recommend reading it, for sure. The one negative (and it's a big one) I think is how centered it is in pathology. Personally, I have a tendency to see myself as flawed and messed up, so reading a book where the whole premise is that I am flawed and messed up and the only way to improve is to transcend my personality, I don't know. It doesn't exactly improve my self-image, let's just say. That's what I like about The Positive Enneagram, although I will admit that maybe it's a little too positive, and I really dislike the four wing descriptions in it, they are overly simplistic and straight up inaccurate. I think the upatel description gives a relatively well-rounded presentation, which I prefer.
I read the everything enneagram book awhile ago. I remember it was written by a 4w5 which I thought was cool. I'll have to check it out again.