To my mind the work of Hyperion and Endymion is worship. I read it each time with a new craze. Playback is smooth and even if both Dan Simmons share in major technological or phylosophique flights, which could destabilize more than one person, we like to follow. The story has a few lengths by here and there will not hurt anything but playing. The worlds and technologies developed are extraordinarily rich and exciting, the philosophical side, too, has a more than pleasant appeal.
In short, I loved to read and reread the cycles of Hyperion and Endymion.