no experience with Garmin vector but have assioma duo. outstanding so far. great battery life, excellent accuracy (against tacx 2t trainer). It showed a sig L/R balance issue, did static weight test and it was dead on for the reference weight. only issue is the poor weighting of the pedal which makes missed clips far more common than the shimano dura ace pedals they replaced. For the price it’s a no brainer in IMO. biggest issue may be the 2 month wait to get a pair.