[Bloody Sam Roberts]

Good choice. But, I read them years ago and still think "God Emperor of Dune" was kind of creepy and by no means the best of the lot.

But, it's Sci-Fi so...just go with it.

[EEGator]

I’m not there yet, but I really enjoyed the first book.

I like SciFi. RAH and PKD are always good reads.
After the Dune series, I have The Necronomicon by HP Lovecraft.