I’d take the G-Shock. No light giving my position away unless I ask for it, good enough water resistance, and the battery will last long enough that either I’ll be dead or there will be Rolexes and Omegas available all over the place, assuming that living in a post apocalyptic world anyone cares about anything other than the moon phase and the season.
The battery in my G-Shock (DW-6600) lasts for years.