James S. A. Corey (pen name)
Short version: same as the first.
Director's cut: I found myself getting irritated at some of the authors' quirks. For instance, they tend to create throwaway characters--characters who come on, get named, do something important for one chapter, then die or wander off. Also, the characterization is even less convincing than in Leviathan Wakes, and there's even less to think about. On the other hand, I read it in a few large gulps, so it's still got the space opera thing going for it.