2nd edition review (3 stars):
This book is over-rated, especially by the authors. It is colourful, has diagrams and pictures, and is interesting to read, but not very organised in any logical manner and contains a lot of waffle, while it lacks detail on many topics. It does not have an organised approach to the subject and is hard to use as a quick revision tool as it is not at all concise. It is probably better suited as a reference text but even then then structure of the book and lack of detail make it less useful.
3rd edition review (4 stars):
I found the new (3rd edition) of this book much better than the previous one (of which I was not a fan at all). Useful new summary boxes and text is slightly better organised with less irrelevant material and blabbering than the previous one. Pictures and illustrations are excellent as usual. Another welcome new feature is the 'case history' boxes to illustrate actual presentations.