The big difference at now (before reviews ) are:
- X9s use custom version of kodi "ZDMC" VS himedia pro use official kodi + addon HI-fw
- Realtek RTD1295 not have video engine for video quality enhancement
- there are some issues about Realtek RTD1195 / RTD1295 based Android media players violate Kodi's GPL license.
For me all are minor items.
a) Not wanting to reveal the code to make HW-acceleration work with their own SOC is understandable by me. The gain is considerable as 3D-BD support and RAW HD audio passthru can be solved. The KODI community does not want to spend a lot of time making every new SOC for Android work constantly which I also do understand. Manufacturers releasing media players with bundled illegal Add-On's is a very different topic for me.
b) Himedia products are less standard than these Realtek based players as Himedia uses standard Android OS for Smartphones not intended for media players requiring a lot of proprietary code. These Realtek RTD1295 based players use Android TV Marshmallow as a basis. Just look at HDMI-CEC included with the latest Andoid TV version. Hence there are clearly 2 sides to this coin.
So it comes down to overal PQ and Media center software quality and functionality which makes it a serious competitor.
Will be interesting to see the reviews coming in.
What i missed is defined support for DVD including folders, ISO's and Menu's. There is no BD menu support, but BD support in general seems OK. Also true auto-framerate is claimed to be included.