I've just finished reading The Expanse series of books by James S A Corey. It's a great read and I definitely recommend it, especially if you like sci-fi with a little horror. The TV show is fantastic too.

I'm thinking of reading the Hyperion Cantos series by Dan Simmons next. I've also heard good things about The Remembrance of Earth's Past series by Cixin Liu (first book is The Three-Body Problem). Has anyone got any other sci-fi/horror recommendations?