Michael Ende is an author I really like, because I can understand all his books.
I have read the following books by him:
- The Neverending Story - read this one first, if only because its popularity is proven in the English-speaking world. I don't think too much of it, though.
- Momo - ...or read this one first, because it is my favorite book of all time.
- Mirror in the Mirror
- The Night of Wishes
- The Prison of Freedom
I have a full bibliography of Michael Ende at http://shii.org/ende/ . Most of his books are out of print in English even though they remain in print everywhere else in the known world because of intellectual laziness by AmeriKKKans.