poker books / e-books

As all of you know, there's a lot of poker books to read if you want to learn some basic skills and specific tactics.

Some say that the mots expensive book is "Let there be range" by Cole South and Tri Nguyen (if I remember correctly).

The newest one is "Don't listen to Phil Helmuth" by Dusty Schmidt. I haven't heard about any books coming out after this one, but there might be. As I've heard, this is the newest

I would like to see if any of you have read one of them, maybe both.
The most interesting to me is the "Let there be range". It sounds like interesting reading, and if it still is the most expensive poker book on the market, then it has to be good!

Any comments to one of those books, or maybe both?

Regards!