AFAIK...

.. both are 2/16gb.
.. H8+ uses rockchip, android5.1; Q10pro uses hisilicon, 7.0.
.. H8+ does not have imprex2 engine
.. not sure, please check... H8+ can't do 10bit, HDR.

basically, if u r not playing back the highest grades videos thru home theater, save RM200, get H8+.

but if u hv a 4k/10bit/HDR tv, compatible home theater and do a lot of high grade video playback, u want the Q10pro.

popular android apps for online streaming... i say no difference.

The Q10 Pro is more future proof.. Since your primary need is Kodi, must stay away from rockchip devices.. Kodi and Rockchip devices at the moment don't mix. Also, HiMedia devices and Kodi, expect hiccups.. Get a Minix instead. Very Kodi friendly.

i do not think octa core in h8+ is "faster" for what u use.

Q10pro is fast, no worries about that.

the best feature is the native player which is excellent for playback incl a full BD menu (beta version).

(native players means no need other player like mx, vlc, kodi - this itself is very fast compared to using other player apps.)

i do not know mibox, which model, but i can understand what u mean reading what other users say.

lastly, if buying himedia, stick to current popular models like H8+, Q5pro and Q10pro.

for the simple reason of getting future firmware updates easily.

other models, there are A5 (amlogic) and Q30 (hisilicon) available now but are much less popular.

never tried that, think cannot.

even if u can, i wud think it cannot be good in that the response time will be slow, not smooth.

the box has plenty of flash memory, no need for that.

unless u r planning to install a thousand apps!

however, if u r torrenting or using kodi/quasar, u can set path to ext HDD for large files storage.