Coros vs Garmin heart rate straps. Which one to trust?

[@georgevadnais3516]

You place the coros where coros tell you without looking where are you'r veines. I wear mine inside my forearm where i have big veines and it’s bether .

[@fellrunningguide]

Yes I wear it on the upper arm as recommended by Coros. It doesn't fit as well on my forearm.

[@georgevadnais3516]

@@fellrunningguide look for the best veine that you can see, put it on an make a test. ((( If you want ))) for me insiste my forearm, close to my elbow = sweet spot.