I have been using Charge 6, my first Fitbit device, for a bit over a month. Previously I have used Xiaomi and Amazfit trackers/watches. The reason I opted for Charge 6 was the ECG/irregular heart rhytm notification feature, which unfortunately stopped working a week after I got my Charge 6 and has not been fixed yet. But that is an issue related to Fitbit app rather than the Charge 6.
I have read about quite a few negative experiences related to the Chrage 6, but for now I have not been affected by them. My experience with Charge 6 has, therefore, been quite a positive one.
Sleep tracking feature is something I have been impressed by the most. Its accuracy in my case is scary good. I do not know how it does it, but it can tell whether I am actually sleeping or not when I am in bed. Like it records the time when I go into bed, and then records the time as awake (in bed) until I actually fall asleep. Also if I wake up during the night it would somehow figure that out even if I do not get out of bed. My previous devices only figured I was awake if I actually got out of the bed.
The other feature I am pleased with and mostly rely on is the heart monitor one. I have found it to be reliable and accurate including during my runs (tested against Polar Verity sense heart monitor), but on the condition that I wear the device at least two fingers above my wrist bone and as tight as possible without it causing discomfort (as advised by the manual as well). I also like how the tracker would alert you regarding the heart zones you are in while exercising.
The only thing that spoils things for me is this Premium subscription model which is just not worth it for me since I couldn't care less for those exercising and mindfulness coaching content. Unfortunatelly, without Premium you also lose some potentially useful features like readiness score, sleep score details, sleep profile and stress management score details which greately reduces the value of the Charge 6. These features alone are definitely not worth spending £80 a year for though.
Here in UK you can get the Charge 6 for around £120 which is a fair price. In the context of a 2-3 years investment, though, the cost including Premium would rise to £280-£360. For that money or a little more you can get a Polar or a Garmin watch that is on a completely different level without any subscriptions involved. So, in the end it is a bit of a mixed bag deal. I wish Google dropped this model and only offered subscription for the coaching content not for device features. I just find it silly that you pay for something to get it and then have to pay more for it to work as intended.
