[Mount81]

The AMLogic S912's have a proper 10bit output tunnel, using 4:4:4 10bit for 4K HDR with LibreELEC Kodi Krypton.
There are certainly 10bit user selectable options in Android display settings as well.

The S905X series does 10bit > 8bit dithering. No idea how good it is as I do not use a S905X for Android.

On another big forum big Thread dedicated to the Amlogic Boxes with LE the common supposition is that LE still isn't as great and advanced in overall on S912 than on the S905X Boxes. I guess because the main line of development of LE was begun on and stuck for a long time with S905X, and the S912 line just stayed some kind of secondary "side-branch". I've read some complains about playback an PQ problems with some types of videos, occasional stuttering and slow GUI + playback menu issues with S912 + LE. All the comments I've read suggests that LE on the S905X still gives an overall more predictable, probed and bug-free user experience. Tho' it's also emphasized that the LE on S912 still isn't that unusably bad or unacceptable with some compromises. But if I had to choose now, I would definitely go on the "safe road" and rather choose the S905X. Have you ever experienced some these mentioned issues?