BRO! PKD is my absolute favorite author. While I LOVE "Androids", there are SO many other books at least as good (if not better). Some get a little whacky (especially stuff written around or after his "religious experience") but they are all still important to read if you enjoyed "Androids".
For a real mindfuck, read Dick's short story "Waterspider" before you read any more of his stuff (or any sci-fi, really). It puts all science fiction on a whole other plane of existence. THEN go back and read old speculative Sci-Fi ("The Sleeper Awakes" by H. G. Wells, "The Machine Stops" by E. M. Forster, and "The Master Key" by L. Frank Baum to name a short list).
I have Ubik and Valis, to be precise, sitting on that hallway table of mine. I'll get to them eventually. :D
I will add your suggestions to my list :) Always looking to make my list less achievable :D