I have not read the Last Don, but I did just recently finish Omerta and it was very good. The main character reminded me of a young Vito Corleone.

You know, we always called each other goodfellas. Like, you'd say to somebody: "You're gonna like this guy; he's all right. He's a goodfella. He's one of us." You understand? We were goodfellas, wiseguys.