I have all three, as well as others. For someone who has never handled an original, Peter's book filled in where the others had left questions . I don't do things the way he does, but for the money spent, it was well worth it. Personal , IMO, [ and everyone has one ! ] I think that some carry their view of Peter over to their opinion re the book. I've heard some flame it, who I know have never opened it. I sure wouldn't pay $400 , but it was $40 well spent when I bought it.
The first book I'd buy would be the Buchele's , then C. Dixon's, then Peter's