"Not the First Robin vs. Not the First Batman" from Robin vol.2 #1 (DC, 1993) by Chuck Dixon, Tom Grummett and Scott Hanna
After a number of mini-series, Tom Drake was finally ready to take the plunge (or, looks like, get pushed) into monthly series-dom, and he had an incredible 185-issue run. That's almost 16 years! Looking through my long box, its flow keeps getting interrupted by Batman and DC events, but I remember getting enjoyment out of it at the time. Still, I quit a bit after Final Night, when I guess I'd had enough of crossovers and had deserted the other Bat-books as well.