Zidoo Z10 vs Z10Pro vs Z9X vs HiMedia 8K

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There are any other changes than Dolby Vision encoding?

HiMedia 8K for example offers Impex engine 2, 8K resolution which means, that chip is so powerful that should decode h.266 VVC (which will be soon on the market and very popular due to much better quality/ bitrate ratio)
I had HiMedia 10 pro (4K@60Hz H.265/HEVC, HDR 10bit) it supports Dolby True-HD, Dolby True-HD and other audio formats, which Zidoo cannot do that.

Which one will you choose to buy and why?