I should say up front that we sell these books, so I could be somehow subconsciously biased, but...
I really liked them and I think they're among the best books Hinoki's published so far (Perceiving the Direction of Play was the other one I liked a lot).
The material for the books was taken from the study sessions at Shuko's dojo, where young pros went to learn from the master. They'll usually review a game, sometimes with minor comments, until Shuko stops the replay at what he considers to be the key turning point. He then analyzes the game, explaining the most important issues in that position, and present 'The Only Move'.
In general, I dislike the phrase 'only move' because I think it's overused to the point that it closes people's minds. However, Shuko always provides a good reason for why he thinks his move is better, and usually it's fairly convincing. For me there were a few Go epiphanies while reading these books and I've no doubt that there's a lot more to be learned from them, given the luxury of time.
Because he's reviewing the games of young pros at his dojo, the level is quite high, but it should be good for you, Logan. We can presume that all of these pros are quite strong at reading etc, but the book does give you the impression that Shuko's on a different level. The main difference between him and them seems to be the clarity with which he views the whole board position and points out the key factors. To a lesser extent he also seems to have a sharper intuition for tesuji, haengma and the flow of fighting than most of the others.
Even though the books are presented in a problem format, you get the game record up to each problem position on the next page. I've found that playing through those openings and really thinking hard about Shuko's suggestions is worthwhile and fun, and I'm looking forward to doing that more when I have more time
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