Well, I have been surprised in a bad way.
In a way, I have been influenced by Amazon to get the two Visual Aids along with Information is Beautiful (which is great, by the way)
In this book, the vectors graphics are very poor, the information badly treated. The inforamtions displayed in are pretty basic and do not bring any of the intellectual excitement you can get from a visual dictionary or information is beautiful.
I would advice to avoid these two.
(As you may have noticed, I'm not a native English speaker, forgive me ^^)