Jonny Quest - by Hoyt Curtin. I own the limited edition release by La La Land Records. I used a special program to create pseudo-stereo. It sounds superb.
My other nominee - which I also own by La La Land Records - is: The Wild Wild West - by Richard Markowitz. It is positively symphonic and cinematic.
I realize some purists object to pseudo-stereo of mono, but I do so not just for the stereo effect itself: Separating sounds along the stage makes the nuances more discrete; subtleties become audible that tend to be buried in what I call the “logjam effect”: all frequencies piled on top of each other, and then further muddied by being doubled in two mono channels, creating a phantom center signal.
Modern systems do not play true mono. There were true hi-fi mono systems back in the 1950s and 1960s. They sound cleaner than two identical stereo signals coming from two spaced stereo speakers: point source versus two overlapping identical sound sources with timing distortion depending upon where one is sitting. (One could make a true mono hi-fi system, of course; most do not know to do so, or do not want to do the work.)
Omg… Wild Wild West…. I LOVED that show when I was a kid.
Good call!!