May be that some people will say that this review is not necessary, i do not have the same opinion.
Each type of device corresponds to a user profile, those who do not have Wired Gigabit Ethernet and who do not want to have external hdd on their audio-video bench/furniture could be interrested by the X10 which allows to have a storage up to 10 To in a small cube of 20cm by 20cm.
As far I know, the X9S and X10 have the same wi-fi antennae. Only the new X20 will have improved MIMO wi-fi antennae. Both, X9S and X10 have the same wired Gigabit connection and same performance, because hardware is the same (there are reviews claiming that the motherboard of the X10 is the same as the used in X9S).
On the other hand, initially Zidoo promised us that X10 would have a 'more professional software' than its siblings, do you remember? Currently the X10 has a firmware near identical to firmwares for X9S and X8, so besides of a revamped display, an internal HDD bay and a new fan for that bay, no other difference exists.
I asked this question to 'mirror' some weeks ago and I've received no reply yet. I think Zidoo have left their plans to add exclusive features to the X10.
That being said, it would be nice to have a review of this device here, so come on
PS. I'm boblo from Zidoo/Kodi forums