There was another thread awhile back about this topic. From the replies I gathered that it's valuable, but you can get the same information from reading the boards.
Myself, I think you should buy the book (think I will too). When I read the boards how do I know the info is Montana's or not?
Gotta admit you took me aback with the F word with your screen name Devout. The Sinner part sneaking through?
Damn, how do I get a laughing smilie on this?