I should also add that I use them with a 910xt. This means that (a) I only get the 'conventional' power metrics and not any of the fancy pedal dynamics stuff (whether or not it's of any use) and (b) I have no option for setting angles etc. I just run a static calibration before each ride. My understanding is that everything else is automatic in the 910xt, but it does occasionally worry me that I can't manually reset or validate any of the angle/calibration settings etc.
I should also add that I use them with a 910xt. This means that (a) I only get the 'conventional' power metrics and not any of the fancy pedal dynamics stuff (whether or not it's of any use) and (b) I have no option for setting angles etc. I just run a static calibration before each ride. My understanding is that everything else is automatic in the 910xt, but it does occasionally worry me that I can't manually reset or validate any of the angle/calibration settings etc.