I had a chance this weekend to spend a few hours comparing Netflix HDR between the Samsung 8500, Panasonic UB900 and Roku Ultra.
The Samsung 8500 was the only device capable of playing Netflix in 24p. UB900 and Roku both convert it to 60p. I used a number of the Marvel series to review each device with a focus on the higher paced action scenes to compare 24p vs. 60p.
I was expecting to see a noticeable difference but all 3 devices looks more similar than not. The 60p conversion on the UB900 and Roku do not look anything like FI on either the JVC or Sony projectors I've had here. It could have passed for native 60p content imo and didn't see any obvious artifacts.
Using the 8500 again was a painful reminder of how awkward this player is. From the miniature remote control, slow interface, even fast-forwarding through the Netflix content was a pain. UB900 and Roku Ultra felt much quicker in navigation and overall seat of the pants experience.
I decided to try some of the 4K HDR demos from Youtube, the Peru demo in particular which is remarkable to see in HDR/WCG. It was interesting to learn that only the Roku Ultra supports Youtube with HDR/WCG and did an excellent job playing it back. I bought the Roku 1 year ago when it was released and it was buggy so it ended up in a TV room for 1080P duties. This was the first re-visit since that time in my HT and pleasantly surprised to see they have updated the firmware where it's more stable and has a stand-out feature like the YT HDR/WCG support.
Apples doe not support VP9 which means no YT HDR/WCG in their new $180 player.
in conclusion, I'll likely use the UB900 for all UHD playback and Netflix HDR as well and turn to the Roku on occasion to see an HDR/WCG demo or 2 on YT.