I have read both of his books along with countless others by people who have left the society.
I felt that Rays books were very well written. The most heartbreaking to me was that the examples I read about in his books didnt shock me at all. Its like, I knew these kinds of things were going on and I always thought it was a normal way of life. Seeing it in print made a difference for me. Any witness who says these books are full of lies is lying to themself. If you have been in the organization for any length of time, deep down, you know that the things written in these books are in fact happening.