There are several Cadogan opening works from the mid-90s that are so far above the quality of most of the stuff being poured out by Everyman since that it is shocking. The Everyman stuff are like the cliff notes, and this book on the QGA by Neishtadt and the two-volume work on the English defence by Bagirov, are like the real deal. This book is 286 pages long (not 224 pages as stated above, plus this is a Cadogan book that has not been re-issued by Everyman), is packed full of thousands of variation, tons of explanatory text, and is carefully laid out with a complete index in the back. Equally stunning is that throughout the book, each variation is carefully indexed numerically, and each variation heading re-states the opening moves up to that point. This feature allows you to re-play moves to that point without having to flip back and forth all the time. This is a variations format book, with tons of games in the notes, but no "illustrative games" per se. It is a challenging and massive work. Neishtadt is an excellent chess writer. Everything he has ever done is absolutely first rate. Other than this book, I especially love his two books, "Winning Quickly with White/Black."