"Liked Spin, This is good too but less details"
I liked Spin, this is a good idea too but failed to develop the idea or clarify how all this took place. With better descriptions and theme development details, this works. I would say okay if you like the idea but don't expect too much.
"Confusing But Okay"
If you listen while on a plane or get distracted when listening, skip this one. Once something is quickly introduced you don't get a chance to catch up. Left no real impression. Stick with the classics.
"Too Short, I lost a credit for this?"
Don't bother. Like Vance, but not this. I thought it needed a lot more chapters.
"Too Much Frustrated Romance"
Great ideas, long on character's lost romance. Narration is good. As a hard core Sci-Fi fan, some good details but a little long. Definite sequel potential but I would skip the sequel.