Really, if you're a fan of Android the way Google does it, Nexus time is like Christmas.
This year we get two choices in hardware with the Nexus 5X and Nexus 6P, along with a still relevant and solid model from last year still available in many places. They all run the same exact software, and that means choice for Nexus fans. It also means you have to make a choice if you're only buying one.
Which one is for you? Look down, see the poll, do your thing.