This is an excellent reference for someone who wants to know about any brand of motorcycle. There's something in there on all of them! I like everything about the book. The photography is great and there's some really good background information, too. My criticism of the book lies in the selection of the particular bikes that have any meaningful coverage devoted to them. Certain marques are overly represented where others are ignored or get very light coverage. Too many Ducatis, for example, and not enough early Kawasakis. Too many Ariels and not enough bikes from companies like Benelli, a company that sold zillions of lightweights. The other thing is the specific bikes chosen to represent certain companies. I would like to have seen a little more thought given to those that were the most significant models. That's my only real criticism. The authors' interests were reflected in this book. But again, in summary, it's the most complete work of its type I have ever seen, and I have spent many hours enjoying it. It's also nice to have whenever anyone talks about a particular bike-- you can look it up in the book and in many cases, find a picture.