Originally posted by Nesster Hin, the most major operational difference is that the program cameras use the A lenses whereas the ME is aperture priority (Super adds manual) using plain M lenses. The program cameras work in aperture priority with M and M42 lenses fine, and they do have manual mode as well.
The viewfinder on the ME series is the largest, but they aren't bad on the Program series either.
At this point in life, I honestly opine that whichever one shows up in good condition at the right price is the better one at that moment.
Ok, thanks for info. Seem fairly close then.