Does anyone of you managed to get correct calories burnt number by adjusting hear rate zones? Or is it just better to remove wrist HR monitor and use steps-based calories?
Any HRM will give you a much better estimate if it is given accurate information - specifically YOUR resting and maximum heart rates. Garmin's RHR autodetection algorithm sucks, and very few people hit their true MHRs during training so autodetection sucks there too (although that one is not Garmin's fault). If you personally measure your RHR and MHR and enter these into the settings in Garmin Connect, you will get a better calorie estimate.