HRM/GPS - to upgrade or not, that is the question
I admit it, I'm a gear nut, and I like new and shiny, so I'm a bit of a sucker when it comes to the latest and greatest. Here's the thing: I have a Garmin 910XT, and have had it for about....4 years (I think). It has served me well and continues to perform. I have cadence/speed sensors on all my bikes, and it works nicely…