Not hard sci fi but I loved John Brunners work, especially Jagged Orbit... seeing what he was talking about 40-50 years ago is incredible. As soon as I finished

Not hard sci fi but I loved John Brunners work, especially Jagged Orbit... seeing what he was talking about 40-50 years ago is incredible. As soon as I finished it I grabbed 3 more of his books, they weren't as good but all interesting, on par with the Culture series which is another one of my favorites