Let us set the parameters:
Science Fiction (narrow, not broad)
Mass market paper back (and something I own but with enough suggestions that should not be a problem).
Let's say by someone considered a bright new shining star at the time. Not that this is not the same as best selling.
Someone whose older fiction has not since been visited by the Suck Faerie.
No MilSF or proto-MilSF (although stories set in the military in peace time  are OK and wartime stories that are not MilSF are OK too).
No, and I cannot emphasize this enough, heroic torture or contrived ticking bomb scenarios.
1: Thank you very much Hear My Song for the flashback I had as soon as I typed "peace time", "I was born in peacetime. I haven’t seen what you’ve seen; I haven’t been where you’ve been" ran through my head.
- I want to read some science fiction on the bus