Concerning "emulators", I prefer to call them so instead of clones
... I do have 2 emulators: a C260 and an Onda VX858, which both are rockchip players and both are perfect emulators.
To pick perfect emulators it have to make coincidences in all areas, but the brand. Starting by the chip obviously, and the user need to have the knwoledge on what to do if the player get bricked.
00christian00... few days ago I saw a device looking exactly as an Onda VX979, I have seen some extra features in this machine like it is to play Real video, so I go to the seller and check the machine, which was in fact a rockchip player of 2.4" screen. In that moment i know that this machine wouldn't run the latest versions of VX979 as that version are based on ADI solution as you said... isn't so?