Garmin Instinct vs Casio Pro Trek — which should a hiker choose?

Across the reviewers we read, the split is clear: Garmin Instinct models add GPS, mapping breadcrumbs, smartphone notifications and training metrics at a higher price, while Casio Pro Treks focus on the core ABC sensor stack, atomic timekeeping and effectively unlimited solar battery without any subscriptions or charging cables. Pick Garmin if you want navigation and fitness tracking; pick Pro Trek if you want a set-and-forget tool watch.