I am a big Nexus fan, and my Wife now uses my old Nexus 6P. It's a good phone, was a great phone at the time of launch of 2015, but now it's ok. Biggest issue is the inconsistent battery life. Sometimes is pretty good, other times it's just ok. But is never great on battery.
The display is not good outdoors.
For the price it launched at of $499, you got what you paid for.
Right now I have the iPhone 7 Plus, and I am no Apple fan whatsoever, I don't like iOS10 that much, but this 7 Plus runs circles around my old Nexus 6P, the battery life difference is unreal, really the 7 Plus gets SIGNIFICANTLY better battery life than the 6P, no comparison. And the 7 Plus display is so much better and brighter outdoors. And the overall smoothness of the OS is way nicer on iOS, and I am a big stock Android fan, I love stock. But the 6P isn't as smooth as I'd like it to be.