I'll wear my Pebble Time Round until it disintegrates

none of them, i’d rather not have any extra data on me out there that’s digitally storing it anywhere, even locally.

i keep my odometer and a pulse monitor with me, but they’re both local dumb.

I use Suunto 9 Baro.

Currently wearing a mechanical watch. No data collection, no batteries, and it has radioactive tubes that glow for decades so I can see what time it is at night with zero effort.

If I wanna track fitness I'll open vim and record it there.

Really wish there was an Android watch that was as reliable and responsive as Apple Watches

None. I'm one of these oldtimers who has that backward opinion that a thing has to do one thing, but that very good, so I wear a brick of steel that's actually ticking away that I have to check once a month, if it's on time. Plus every 4 years it's gotta have an oiling. On the other side: no batteries to charge. And my fitness tracker is my fat belly ;) kinda fit, kinda fat.