F451 is hardly even good. As was said best by Oliver Watson, it hardly seems fair to praise an author for writing a book about how powerful and good and great and wise and important authors and their books are.
I didn't find Brave New World all that depressing. Good, but not depressing. It's hard to explain why without spoiling things, but it comes a lot down to how differently the two books end. Worth a read, though.
edit: If you want something to cheer you up, the linked book is quite enjoyable and short.