Ace's book is entertaining but doesn't read as if it was written by Ace. He admits that most of the stories are the recollection of others as he doesn't actually recall most of his own life. Perhaps that's why he can distance himself from his actions. Apparently he has started work on the follow up.

Peter's book is the most bitter autobiography I've ever read & a lot of the stories seem to be cribbed almost word for word from other Kiss related books.

I thought Gene's book was good although obviously rich in the delusion we've become accustomed to.

Paul's autobiography, the one he repeatedly said he would never write, will be coming out next year. As he's the most protective of his own privacy I can't imagine him revealing too much about himself. It feels like it will be released purely to rebuff the claims of the other three.