I absolutely adore this series (read it off a friend). I wish I had it in TPB form. There was a digest-sized reprint done, but I can't find it anymore. What absolutely killed me was the scene when Johnny is reminiscing about certain events which Peter then says, "Sorry, wasn't me. That was a clone." "What about...?" "Clone." "And...?" "Clone."
This was the series that made me sit up and notice Dan Slott and tell people, "See? You can use continuity and not have it be masturbatory!"