I would use nothing else for streaming right now other than my ATV4K. For Netflix, Vudu and Amazon, I love that thing. Excellent PQ, frame rate matching, dynamic range matching...
I am actually going to be selling my 203 as soon as the UB820 hits retail. From what I have seen so far, the internal tone mapping setting it has is doing an excellent job (has a projector, OLED, lower nit LCD and higher nit LCD setting). It takes into account your display brightness top end...