The Evolutionary Void (Void #3)
What a solid ending to a pretty fantastic series. Considering this is the end of the second trilogy based in this fascinating universe that has such a massive scope that it was entertaining to see where it would go. Full of everything from post-Singularity intelligences, uploaded human consciousnesses, cyborgs, magic and even some elves tossed in.
To really get this book you must have read the previous books, preferably even the series that preceded this one given that is where many of the characters and came from. This is a SF series that evokes the older SF, large in scale and concepts coupled with solid contemporary characters.