I may have to pick this up as single issues (heresy!). JLI brings back fond memories of the late 80s for me. I remember driving around some friends in a shitty rusting Toyota with a new issue of JLI#6 in the back, and one of my female friends read it, initially with some contempt, and then said, a few minutes later, "Hey this is actually funny."
The series is targetted at the nostalgia crowd, and I'm willing to accept that I'm one of them.