Zachwrote a review of Quarq SRAM XX1 Power Meter Crank Arms - BB30 on February 16, 2015
Familiarity: I've used it several times
I've only been able to get out on this new powermeter a couple times as it is Feb but the initial set up and apparent accuracy of the system is great. I paired this system with a Garmin Edge 500 and the system picket the cranks right up and have not given me any troubles. I love how I do not need to mount a magnet on my frame to capture cadence! I have a PF30 Ti frame and I do not have an easy mount for a magnet without pulling the PF shell. I also use an SRM on my road bike and based on my percieved exertion the systems mirror eachother very closely.