i bought the last model and this new fancy one with "wind" factored in the power.

i dont have a lot of confidence in the consistency of the power output on average. i can run on a treadmill at a very controlled pace and reported pace will be all over the place on both models.

however i do feel that they are great for pace / cadence, and for some reason pace seems to be a lot more reliable a metric. i really like using it for pace on outdoor runs versus the gps on my watch. the pace is pretty much instantaneously updated whereas gps lags and even drops out depending on weather / tree cover / ufos.

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80/20 Endurance Ambassador