The Dispossessed was a good book, but I think I like Left hand of darkness better. Of course both were award winning books for her.
I have read Atlas Shrugged, The Fountainhead and Anthem, while I have some definite Objectivistic leanings, I am not a fan of her writings.
One of the good things of going to a large university, even back in the late 70s, early 80s, Ohio State had a Science fiction literature class. At that time, I was pretty narrow in my sci-fi/fantasy reading, Tolkien, Asimov, Bradbury, Heinlein. The class introduced me to authors like LeGuin, Pashin, Purnelle, Niven