The Garmin HRM Run gives you a whole lot of extra metrics like cadence, oscillation, ground contact time, ground contact balance, stride length, and vertical ratio. If you want extra data that's the one to go for! The best for me has been the Polar OH1+. It's not a chest strap, it's an optical arm band.
In this study, the Polar H7 chest-strapped heart rate monitor was used as the criterion measure in 2 fitness trackers, namely Xiaomi Mi Band 2 and Garmin Vivosmart HR+. The real-time, second-by-second heart rate data obtained from both devices were recorded using the broadcast heart rate mode.Best for running: Garmin HRM-Pro Premium Heart Rate Strap. Best for swimming: Apple Watch Series 7. Best for rowing: Scosche Rhythm 24 Heart Rate Monitor. Best for exercises of all sorts: Myzone
11:19am. - Omrom IA2 reading: 111/68; 52 bpm. - Garmin reading: 109/65; 53 bpm. When taking a 3x reading, there is an automatic note added to the 'Notes' that says 'This is a 3X reading'. Unfortunately on the 3X reading it doesn't show the variation in the 3 readings, just the average.hysC.