I'd used a Kanji dictionary twice in my life before buying this, but I had to do a few translations and after playing with this book, there was no looking back.
To be fair, I don't read Japanese fluently, nor do I speak Japanese fluently, far from it. However, when you need to translate a Japanese name or two, kanji will always come up. From me personally, it's for karate history.
I find this book excellent, especially when compared to the others of its type, especially when it comes to numbering the kanji. The indices into the kanji characters are intelligent, that is, they contain information about the kanji itself. As an example, character SHIN, meaning "mind", "soul" has the index 4e5.1: 4 strokes for the radical (radical 4e), 5 strokes for the rest of the character. The Nelson just numbers sequentially and for the same character, you have #3245. This isn't to say that the Nelson is bad, but I feel that this dictionary is better thought out and more useful.