I have a question and hopefully someone knows the answer.
I purchased the new Speed Sensor for the Edge 25 (And yes, we all know that it has software/firmware issues with v2.5), and when it is working and paired, I don't see a major difference/accuracy in the reported speed. So my questions is, when the GPS is turned on - does the Garmin ignore the speed sensor and just utilize the GPS data for speed? Therefore the speed sensor is only really needed if you are using a trainer with the GPS turned off.
I've been testing out the new Edge 25 with the last few weeks and comparing it with my Sigma for accuracy.
-Eric
Garmin Edge 25 (v2.50)
Garmin Bike Speed Sensor and Cadence Sensor (new, magnet-less)