I am a marathon runner who uses my bike for indoor cross training. I am finally wanting to purchase a cadence speed sensor that will track all of the important data including milage. I see that Garmin has two models. Just looking for some advice as to which model you would choose and why. I use a Garmin 620. Any feedback would be appreciated.
Two models are available, but I "think" the GSC-10 is basically the old one, and is being phased out. I believe that the magnetless ones (individual speed and cadence sensors) are the evolution of that. Though some might argue they are not as good/effective. I'm trying to decide myself if I should order the new garmin, but I'm comparing to the Wahoo BlueSC ant+/BLE
