ZTE gives 2 years warranty (A7 mini, but the A7 too, maybe?)
ZTE warranty process seems to be arduous at best, though, from some things I've heard.
LG G6 is legit (using it now), and I've used maybe 40-50 phones in the last 3 years (I'm slowing down, I promise).
I'd put the G6 in my top 5...