Pretender ... in our review, the Oppo Reno2 Z shows some deficits. Our measurements reveal weaknesses in the slightly lower-end version of the Reno 2 that are not obvious from the specifications and should be kept in mind before a potential purchase of the Reno2 Z.
https://www.notebookcheck.net/Why-the-Oppo-Reno2-Z-fails-to-convince-us-in-our-review.456881.0.html
Hmmm, Oppo dropped out of my sight years ago, Vivo only regained my attention because of their NEX series, looks like the gap is widening.