Samsung Galaxy Watch Active Pros + High-end design + Competitive price + Reliable battery life + Always-on display + Good fitness-tracking features
Cons
Fitbit Ionic Cons - Slow interface - Severe lack of apps
Fitbit Flex 2 Cons
Samsung Galaxy Watch Active Cons - Lacks rotating bezel - No cellular connectivity - Bixby is a poor voice assistant - Clumsy to use with non-Samsung phones - Fewer third-party apps than other smartwatches