smartphone

I'd like to select ZTE Axon 7.
The reasons are 
1, Good price :400 off-contract. we can't afford to high price when will buy a couple of smartphone at the some time.
2, camera:20- megapixel. It's important when  the camera function of smartphone was used to daily photo   instead of camera.
3, Storage: 64GB or 128GB. More and more APP in my smartphone,every day I think about which one should I delete. I feed up.
4, Display size: 5.5 inch. It's enough.
5,support chinese brand