First of all I have never read the original story so I cannot actually judge the two books together on whether one is far more superior than another. And secondly I was in a rush to get through reading this book since I was hoping to pass it onto my niece the next day.
The Phantom of the Opera - Great Illustrated to me, though, first of all starts off with an introduction to the author for those who may have not heard much of Gaston Leroux and also gives to the reader a bit more information on how this particular story started off. As such I do like to give points for that since with much older authors they are overlooked in their humanity.
As for the actual tale I find it intriguing how so much alike this book actually sounded to some of the other great Classical Goth/horror tales of its time, especially Dracula, that I felt I almost had to check myself a few times. At the same time The Phantom of the Opera itself seems to be one of the more gruesome stories of that particular genre and era.
And yet even as I read this particular version I felt that it was really dry and lacking so much in detail thus making the story seem rather rushed. As I continued to flip the pages my mind kept wondering just how much more was missing and whether what had been left out should have been included as necessary data to help the story flow instead of jumping all over the place. And so I most likely will have to track down an actual original version just to get a better grasp of how much damage was actually done.
Another thing that vexed me was the illustrations for they just seemed plain drab, especially the portrayal of Christine. To me and I am no expert of such cultural information, the hairstyle that she had seemed out of place for her times and also for her career as a singer in the Paris Opera thus making her also seem rather drab.
All in all I guess it may work as an introduction to the story for those who are looking for a book that is more geared for children although it does have its moments. Otherwise even though I am no expert I would have to say that for fans of the original story and also those who are wanting to read this book for a first time I would suggest steering clear of this version while dedicating yourself to the actual book that became the Classic.