I started using a Garmin Edge 800 a few months ago. I've used Polar HW and SW for the last 7 years now for training and racing. I train with HR and supplement with RPE. I use the seven Polar zones, compare race to race from year to year and gauge my training load by time in HR zone. Using power is not an option as I have five bikes and race four different ones (Road, MTB FS, MTB SS, CX). Race telemetry data are the most valuable to me. I very much like the advantages of GPS. For me, I now use both the Polar and Garmin because I am loath to leave behind my ability to do accurate HR comparisons. I appreciate that many others have the same desire for Garmin Connect.
In the meantime, if someone has a viable alternative for this HR dilemma while we wait a change in SW I'm all ears.
Thanks,
woj