Along with books like 1984 and Brave New World, Ayn Rand's Anthem does a great job of describing a dark future and the beliefs and ideas that lead to it. The story's premise (which I won't spoil here) creates a fun backdrop for Rand's typical themes of individuality and objectivism. It's a very quick and fun read and is probably the lightest and easiest of Rand's novels to get into.
Having said that, I found this to be the least moving of Rand's novels, possibly because the central concepts are presented so transparently, quickly and obviously. The novel also includes a lot of deliberate mis-use of the English language which is definitely important to the story, but can be somewhat annoying to listen to. However, the audiobook itself is extremely well read and overall, the story is definitely worth hearing.