PKD is one of my favorite sci-fi writers and I recommend Ubik if you're a new reader, although like the article mentions, you definitely need to be in a certain mindset to "get it." The Man in the High Castle has an interesting concept but I don't think it's particularly well-written. One thing that I think goes unnoticed about PKD is how some of his earlier short stories are undeniably, unquestionably bad. Fair Game…
I found Ubik somewhat intriguing. I’m about 60 pages unto Valis , and so far it’s mostly bad philosophy and theology, thankfully saved by occasional flashes of humor, and the almost-interesting fracturing of the main character into at least two people. Does it get any better?
That said, if you are interested in reading more by him, of his books I can recommend:
- The Three Stigmata of Palmer Eldritch
- Martian Time-Slip
- Galactic Pot Healer
- Eye in the Sky
- the middle part of Lies, Inc
Some of his short stories:
- Beyond Lies the Wub
- Faith of Our Fathers