I just finished Endymion by Dan Simmons. I will hold some thoughts until I finish the next and final book of the series, The Rise of Endymion.
I loved the first two books, Hyperion and The Fall of Hyperion, and found both to be very thought-provoking. I think of both of these as one as the first ends with a frustrating cliffhanger. The stories and plot lines here are amazing!
I cannot say the same for Endymion. I still was impressed with the prose and Simmons' storytelling ability as I 'visited' various locations. However, I felt the two major plot lines within this book to be lacking. I believe I was strung along with not much happening until about the last 100 pages. Also, along the way, I think a couple of times silly events occurred out of the blue just to force plot advancement.
Despite lackluster reviews here and elsewhere, I decided to continue with Endymion being such a fan of the first two books. Furthermore, I wanted to see any outstanding mysteries revealed. Perhaps these mysteries are better unresolved and left to the imagination? Nevertheless, I feel compelled to finish and will now start The Rise of Endymion. Hopefully after finishing the series my opinions will change.