The days after by ballantine is the best PA social science fiction book i've read (bar the great wyndham). It's strange as hell, but once i got into it, i was fully immersed.
The best science fiction I read is by R. Scott Lemriel by the name of The Seres Agenda. It is based upon the many awareness-expanding events that occurred throughout this lifetime and which continue to this day. Eventually, these events revealed a most ancient deliberately hidden Galactic history and history of Earth and our solar system that helped to confirm the depth of purposefully hidden truth he was uncovering through direct experience – in contrast to relying upon belief or theory.