Garmin Quick Release Kit 910XT I've ridden the Cycleops Powercal with a Garmin Edge 500 for the past couple of weeks and, at this point, I'd have to say I am very happy with it. Getting it set up and synced with my Garmin device was remarkably easy and took only minutes. It took longer to reconfigure the "screens" on the Edge to include the new power data. I'm unable to compare it to the MUCH more expensive PowerTap product line (there are some excellent reviews on the 'net where engineer types compare the PowerCal very favorably with PowerTap and SRM type strain gauge based power meters) but for $100 I believe this to be a solid entry into the art of training with power. One of the excellent features of the PowerCal is the ability to easily transfer your power workout from one bike to another without having to change wheel s (PowerTap) or cranksets (SRM). All you will need is additional mounting hardware for your Ant+ device - very inexpensive. C...