If you wondered whether Corey could build on the brilliance of Leviathan Wakes you didn’t have to wonder long. Caliban’s War takes the strengths of Leviathan Wakes and improves on them. The pacing is great, the action is well written, and the dialogue is fun. For a television similarity, think Firefly. I probably did not care about the two romantic relationships as much as the authors wanted me to but the relationship between the crew is what makes these novels work and this is the one where that really began to come into its own.
Though it is not as sprawling as other space opera (or as sprawling as The Expanse would eventually become), to me this is still space opera because though everything takes place within the solar system, there are galaxy wide implications. I read the last 175 pages in one night because I simply could not put it down. I highly recommend you read Leviathan Wakes and follow up with this spectacular sequel.