I like to have a complete series, so I have purchased all of the author's books, including the new Raiders book (that one is in the mail). So far, I have been through Legion of Shadows several times. There are comments that the book is not the best one; however, being brand new to the gamebook world, I have not noticed these concerns. My character has died several times, and I have managed to slay some bosses with lucky dice! Like a video game, when I die, I get to walk through the challenge again to improve. It has been enjoyable.
I have dabbled in Fabled Lands; those are fun but not as deep as Destiny Quest.
I wish I had known about gamebooks sooner!