As a follow up:
After a 36 hr salt test. The Analog is "balls on" 75% (no calibration performed)
The "factory preset" digital is at 71% respectively.
I guess the analog is going in the new humi, and the digital is going in an aging box.
Considering it took 36 hours to get a reading, I would rather use it in a box I'm not going to be in every day.