Coros Vertix 2S wins on battery endurance (140 vs 90 hours GPS per Coros and Suunto specs) and lower weight (58 g vs 74 g), making it the clearer pick for expeditions. Suunto Vertical counters with superior offline mapping depth and route tools in its app. The 1-point verdict gap reflects Coros's decisive edge in the core metrics of runtime and wearability.