I have not yet had time to really use it, but it is large (600 pages) with a hard cover. The paper quality is very good (but glossy paper end) and for once choosing the background color (usually dark or variegated in guides) does not spoil everything: the background is white and makes text and tessortir Many screenshot, tables or maps.
I still have to evaluate the content.
The catch is that pay to have a collector's guide and end up with a book in which a corner is completely smashed, ca discourages some investment ... and it makes the 2nd in 2 weeks on amazon (while never had a problem before), and I see I'm not the only one ...