Which is why I'll never complete the title! I've never had more than half the run at any given time, but I've owned almost every issue at sometime or another. (I've had at least three copies of #15 and - I think - four of #14 at various times in the past two decades).
#44 is another favorite. The first time I saw Harley set up in London - it was probably around 1993 - I remember he had a deep run of high grade Planets. It was not my collecting area at the time, but for some reason this cover is the one that stuck in my memory, along with #49.