I have a 13 mini that is hanging on by a thread and you will pry it from my hand (because I can actually hold onto it). I'm actually considering finding a refub because I prefer my old-fashioned artillery to the 6.1".
The larger phones barely fit in pockets, fit poorly in running packs/biking gear and are just generally inconvienient for being active with them.
Refurbs are out there. I got two a few months ago. Battery health on both is around 85% though.