Not long finished a frank herbert two-novels-in-one-book book. Due to absence of commute it took months to read them.
Dosadi Experiment. Sort of interstellar CIA man with a foot in each of two main powerblocks goes to investigate an isolated planet. Interesting, but a bit shapeless and contrived. I did find the vastly different moral codes at play intriguing.
The Eyes of Heisenberg. Tens of thousands of years in the future a master race has taken control of procreation. A small resistance led by emotionless cyborgs takes them on. I really liked this. The plot is a bit ropey but it actually has some engaging characters and the detached, fatalistic style perfectly suits how events unfold.
Over the 3 of his books i've read (Dune, obvs) there's a recurring theme about toughness and weakness of character from deprivation and decadence that i don't entirely buy into.