Ubik is my favorite as well. Another good PKD read is A Maze of Death... it has very dated tech in it (satellite in orbit playing pre-recorded tape)... but the

Ubik is my favorite as well. Another good PKD read is A Maze of Death... it has very dated tech in it (satellite in orbit playing pre-recorded tape)... but the ideas are very similar to Ubik (in a way). A world deteriorating, an almost spiritual war between forces of order and disorder.