I am way to busy listening to book two in this series to write a detailed review, so that in itself should give you a clue as to my thoughts. 
 Wonderful being back in some real scifi stuff after many many grimdark, fantasy stories over the last year. This book had me completely engaged right from the beginning and I have loved the easy writing style. There is something about the interaction between characters that is very special to this/these authors and I can't quite put my finger on it. At times I feel like I am listening in on a conversation, the dialogue is so personal and realistic. I think maybe it is all the little extra bits added, that a lot of writes leave out as superfluous to the story, a grunt here or a 'huh' or...ooh I don't know. I just love the character interaction. 
 Characters Holden and Miller are great fun and I am enjoying their respective growth. 
 Great book. 
 The BEST thing is, I don't have to wait to carry on with the series.