Nien Nunb said:

I am quite sure this has been discussed on other threads before but is there any kind of reliable reference as to what Ghostbusters looked like during it's original theatrical run? None of the DVD or Blu-Ray releases have ever looked right to me.

I have spoken to a few Ghostbusters fans over the years who saw the old film print quite a few times, and they said it was closest to the 1999 DVD and the new 4K Remaster. The laserdiscs can be a good point of reference (but not always), but honestly these days the 4K blu-ray remaster is the best its ever going to look.