I would hold off buying a 203 for now. In my opinion it was released to market way too early.
Stutters and freezes on 4k UHD disk.
Bluray 3D judders.
Non 3D Bluray is ok.
I have a year old LG OLED (ie Non HDR) and the LG currently upscales way better than the Oppo.
All of this may eventually get fixed by firmware fixes but they are few and far between since the release before Xmas. I believe there is a private beta that fixes 3d Bluray playback.
I bought one because my 93 expired in October so I thought I'd get the 203 as a replacement. I really wish I'd delayed now and let the bugs get ironed out.
Check out the avforums 203 owners thread if you want more frustrated user feedback.
203 owners thread