It was probably my favorite of the books, too, but I just don't think a wide audience would go for it. It is too much a "chapter" in the ongoing storyline. But I loved the Jupiter system, the diamond mountain, the plot twist of the Monolith being damaged, the depiction of Bowman and HAL and, especially, the recruitment of Floyd into the Monolith. One of the reasons I was a bit disappointed with 3001
was the changes in the depiction of Bowman and HAL and abandonment of Floyd.