Which smartphone should buy?

Hello, i'm new here, which smartphone should i buy?
LG Nexus 5X(New-250€)
Galaxy J7 Prime(New-250€)
Galaxy J7(2016)(New-210€)
Galaxy A5(2016(New-230€)
Honor 6X(New-245€)
Galaxy S6/edge(Used-260€)
Xiaomi Mi5S(New-290€)
Only criterium is excellent Camera-(Most important), Battery to last One day- 3.5-4.5 SOT, to be smooth, fast(not to laging or to be slow or stuffs like that) And one most important to last about 1.5-2 years in full speed.
Which is the best for me?

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