I'm a bike rider. Not an electronics expert. I was (am) riding with a Garmin Edge 305. It was great for HRZ training and had great timer / lap / split functions. I did not however have the ability to follow tracks on GPX files. I needed an upgrade anyway so with some research here and asking around, I picked the Garmin etrex 30. I picked it specifically because it has HRZ functions and all the other functions of an etrex 20. Perfect...right?
I stumbled my way through loading some GPX files into it and hit the trail. I was running both units side by side till yesterday and decided to learn the HRZ function. Couldn't find it. I called Garmin today, they were awesome. Friendly, knowledgable and courteous. He walked me right to the HRZ function. Problem is it wont do zones...only BPM. OK, I said, will my Edge 305 follow downloaded GPX tracks...UMMMM.. let me ask. He comes back and says no. Only old (I think) tpc files. Hmmmmm, I say. He said "Oh, you can convert the GPX to the old files and use your old Edge 305. Perfect.
My next questions was met with enthusiasm. "Which Garmin unit does all this"? Oh, that would be the 810 Edge. Well, I guess I either need to mentally convert BPM to zones or buy an 810. Anyone wanna buy a brand new etrex 30?