I try to help here
My advise-is the same as always.
If you only watch HK drama and movies.
It is better to download and watch
real hd rather than a media box.(video source a real factors and broadband speed and stability-4mbps maybe a problem).
For long term-
1-build a low power/cheap pc
(Using a 6 years old-Intel BOXD510MO CPU combo-no longer available, but to gave you some idea)
(do not need a big drive in C-60g.And external drive-1 or 2 TB)
2-Get a good seedbox provider-200gb-RM25.00-30 p/month(depend on RM exchange rate)
3-Get a VPN Provider-RM11.00.(depend on RM exchange rate)
4-get a mid level UHDTV-since you are getting one.(6000 series is good enough)
with these you can watch your movies without interruption and in real HD.
this is my personal view-after so many years with media box.