I have both copies. The bootleg copy's sound quality was horrible. After I got the official version, I was blown away. I finally got to hear all of the songs in their best quality. My favorite songs on here include "Hate", "Childhood's End", and "I Will Be There", although all of the songs are equally exceptional. It's just a shame that we will probably never hear anything off of tis album live, or anything from "Creatures" to "Carnival". Oh well, I still think KISS kicks ass.