I'm also an Acrobat ACE, and was looking forward to reading what was billed as 'the definitive book on the subject'.
In fact I was more than a little disappointed: the book has a definite feel of being 'padded out' with unnecessary information and repetition, and despite its size I felt that some areas were skimmed over.
I note that the author's range of expertise is quite wide, which might explain why I got the impression that the author knew more about the theory of the product than the practicals. In particular, he makes the serious mistake of assuming that in Acrobat 5 the job settings for distilling are shared between the Distiller app itself and the Distiller Printer driver.
In fact, they are entirely separate; this was a (major) change from Acrobat 4, and the fact that he has not picked up on this major feature made me begin to question some of his other pronouncements.
Rather than quibble about a number of other small errors I noticed, I would make the general comment that Mr Padova is not great at explaining concepts. While reading his rather turgid prose, I was thinking to myself that if I - as a certified Acrobat person - was having to re-read paragraphs, a new user dipping into the text was going to have problems.
Bit of a curate's egg - too dense for the new or average user, and falls short of being the Bible that an advanced user requires.