Which is the best phone for VR games and apps?

[AC Question]

I want to buy a new smartphone and the vr is the most important thing for me.
The Daydream ready devices are good but their brands are somehow new and inexperienced. I don't know Daydream games and apps is going to work with other headsets like samsung gear vr...
What do you suggest to buy, no matter the price?
The Moto Z phones and S7 edge or Google Pixel XL?
Thank you.