I read "Letters From the Lost Soul," and I thought it was fun. It was simply a check-out from the library. I don't think I need to own it.
What I liked about it was the lack of pretentiousness-- at least on the technical and life style side of cruising. Some of the debauchery stuff was pretty forced, but the attitude was refreshing.
For example, I like how he notes that some people prepare for cruising as if they were preparing "for death." All the worldy goods go, all the ties are cut, "we're going for years and not coming back," etc. For some, this works, but his point is that one can have a fantastic time by simply going and then coming back to your home, and then going again as needed or possible. It's refreshing since so many cruising books are much more absolute-- you're not a cruiser until you've been out for 10 years and have faced what we have faced...
So, a good read for fun.