Boy! This one presents a lot of ifs.

Bought with my own money, just to use? Repro every time. Crazy money and content to leave it in a closet? The original.

The Repros out there are mostly as-new guns. Do I assume the original Parker would be in similar condition? If so, go with the original.

By far, the Repros have more shootable dimensions, as was pointed out above.

Reliability? Not much to complain about with either.