Egreat A5/A10 have always been more expensive than HiMedia, and one of the things that justifies that price difference is UHD/BD/DVD full menus.
HiMedia have repeatedly said that BD menus will come, but it's not happened yet and I would describe it as possible, nothing more. It might never happen.
With the new firmware, HiMedia have a more recent HiSilicon SDK and have fixed many bugs (including the HDR not-16:9 aspect ratio bug). Egreat are working on an Android 7 firmware based on same HiSilicon SDK, but it won't be released until August, possibly later.
There are pros and cons of both manufacturers..