Apple Watch for me, because of how well it integrates with my phone - the point where i end up using my phone a lot less.

I don’t really bother with fitness tracking to be honest. I know in my head that I went for a 50 minute bike ride on the weekend. That’s enough for me. I do appreciate when my watch tells me if I’ve been too sedentary/etc today or reminds me that it’s late and I should probably get some sleep, but that’s about the extent of my “fitness tracking” needs.