The conclusion of the six-book "Galactic Center" series is somewhat disappointing. It continues the far-future timeline involving the Bishop Family of humans and their attempts to explore and survive in the "esty."
*Spoilers below*
So my biggest issue with Sailing Bright Eternity is that this isn't so much a book with a plot but a long series of 1-3 page "chapters" detailing the various adventures of the current point of view character. It's often like little vignettes that jump from one place to another, often very abruptly and without almost no "why" and even less "how." it's the ultimate in Dues Ex Machina. Author needs point of view character to be here instead of there? Magic bird from super advanced higher power takes them there. One of the things I liked about the series in books 1-4 was the idea that humans were basically a bit player in a much bigger galaxy full of advanced beings but Sailing Bright Eternity makes a bit of a mockery of this idea because we find out that the "old ones" and "highers" have engineered all of this and that we're not reading a novel that's playing out in front of us, but a series of designed events that played out how the god-like beings wanted it to. Thanks humans, we're done with you now.
I appreciate Benford's imagination and this is certainly a unique series. The whole thing is still worth reading, but I felt like Benford's fertile imagination got away from him in books 5 and 6. I struggled to get any sort of feeling for the "esty" space, which is the focus of the final two books. I *think* it was supposed to be a fantastic sort of "anything can happen" realm, but for me it just felt like another plot device in which there are no rules so the author can make whatever he want to have happen, happen.
The saving grace for Sailing Bright Eternity is the parts of the book which deal with the higher mech known as The Mantis. This was a splendid "bad guy" - a being with no code of morals and an unending drive to reach the goals that had been set for it. Really, the mechs as a whole were a great antagonist, and I hope that someday Benford might write more about their society.
In closing, I'm not sure how to sum up the series as a whole. For me, each book had its flaws but was good enough, except maybe this final book. I thought each could have been 50-75 pages shorter, as they all seemed to have a side-story that had little to do with the overall plot (book 1, the end parts dealing with the Sasquatch type creatures. Book 2, the swarmers, etc). The whole series is worth reading, especially books 1, 3 and 4. However, outside of hard sci-fi fans, I don't think many would enjoy the whole thing.