I was also very hesitant to read Larry Mazza's book because his story is so well known that I thought i wouldn't learn anything. But the book is really good. It's well written and it has a lot of details on the Colombo war.

Philip Carlo's book on Gaspipe Casso is really bad. Probably the worst Mafia book i've read. It could have been a great book given the subject but Carlo has no writing skills and was too close to Casso so he basically wrote what Casso wanted. he didn't do any fact checking and the book has no structure. What a waste.