Apple Watches and the Polar series of smartwatches are meant for two different types of people: general users and sports enthusiasts.
Apple Watch Series 5 vs Polar Vantage V
The Apple Watch Series 5 and the Polar Vantage V are two very good smartwatches that are meant for two very different types of people.
The Polar Vantage V is for the sporty person who needs a tool to enhance their sporting ability. The Polar Vantage V is particularly powerful if you are a runner.
The Apple Watch Series 5 is much more of a general purpose smartwatch, with the caveat that it does have some features for sports tracking and also a coaching feature. The Polar Vantage V has all of that and some pretty elite metrics such as a running power meter, VO2Max measurer and a race training planner.