Counterpoint: that 3 year old iphone 6 still has two years of updates coming. What android phone on this list will get even a years worth, if that?
I'd rather get a new android phone with a few years of updates for $400 then a last gen model with nothing coming for $200. Moto z play2, the cheaper motos, the one plus, ece. And dont forget, if you buy used, the battery cant be replaced, so good luck with a worn out cell in a years time.
Yawn. This chestnut gets old..
So the other day I bricked my usual phone and had to resurrect my 2013 (I.e. iPhone 5S-vintage Nexus 5 for a bit).
Dropped on a custom Nougat ROM (Oct17 update) and updated the kernel (Oct17 build). Damn thing runs if anything slicker than new.
Oh and don't forget the iPhone 5S went off OS support earlier this year.
Also I swapped the battery out a couple of years back. Relatively easy to access even though battery officially non-swappable (Youtube if your friend).
The lesson is not to avoid second hand devices but, as I said up thread, pick up ones which were popular in their day so will have good third party ROM support..
J