The saga of Day and June comes to a conclusion(ish) in Champion as the tension between the Colonies and the Republic turns into war. I'd lost the rhythm of the two main characters, and the book primarily keeps them separated from one another...so the romance vibe was a bit lost for me. There are more disease/plague/mutation issues in this one, and I honestly didn't grasp that bit. However, I really liked the view of Antarctica as a high-tech metropolis. I would happily read a book just about that area! 
 Sadly, I think I had more to say about this book, but it's been too long since I finished it to remember. Perhaps that in and of itself is saying something.