I've only had this for a couple days so I will update as time goes on. So far so good with this tracker! I've had the Fitbit flex, charge, and charge HR as well as a polar FT7 and M400. The polar watches I like but I felt they were too big for daily use. With the charge and charge HR I again thought they were too big for daily use. The Alta HR so far has been great for all day use since it's slimmer than any other fitness tracker. I like the display and have mine set to show the time and my heart rate. I tested the HR monitor out by wearing my polar H7 chest strap and then comparing the results from the polar h7 chest strap to the Alta hr and they were actually pretty similar. Overall I'm really happy with my Alta hr!
Added some pictures. The sleep tracker on this is pretty cool. I like how it tells you which type of sleep you were in and for how long.