The first thing to consider when buying this book is the amount of content you get. You will get all the tutorials of the previous book as well as all the new ones. That's about 20 high quality video tutorials and probably 30 written tutorials all with included project files in total. One particular video tutorial is nearly 4 hours long, that's more than what you get when you buy a Gnomon DVD.
And it's not quantity over quality, it's very evident Pete has put a lot of time into the research and development of every singly tutorial. They all include reference images and videos, multiple scene files and every map used. Both the written tutorials and the video tutorials start off with studying the reference footage before actually beginning in 3ds max. This is something a lot of people forget, your work can only be as good as your references. At least in terms of realism.
The online content is also working perfectly now. It only took me a couple of hours to download every single video and project file from the site.
This book is great for just learning different aspects of 3d and 3ds Max, but it's also invaluable that time you find yourself struggling with a specific project.
Bottom line: You won't find more content and better value in any other 3d book out there.