Such an interesting and I would say an unusual topic. I read both of these novels as a student. Unfortunately, dystopian novels about far future tend to be so realistic.

There are also a few Russian dystopian novels. "We" by Zamyatin, "Kys'" by Tolstaya, "The Foundation Pit" by Platonov. Have you read one of those?

I also heard some good reviews about "Metro 2033". It's relatively new, 2007. The Metro universe in a post-nuclear world. As a suggestion for the next book to read:)