Don't underestimate an always on display. It's very nice to be able glance down to see the time or other info without making an exaggerated gesture first. It was what I appreciated most after I switched from Fitbit.

As to the Fitbit in particular, they just aren't well made anymore and have a habit of dying just out of warranty. My last one got stuck in a reboot loop 14 months after purchase. I tried everything with support from factory reset to letting the battery fully die, but nothing helped. Google told me to throw it out and buy another. My previous one had battery issues after 2.5 years, despite never letting it go below 20%. They are considered disposable devices now and aren't built to last.