A. The truth is, nobody really knows and can tell you what the future hold for Chinese streaming TV. Even if you do buy the most expensive TV box, it will not guarantee to last forever because a perfect everlasting box or app does not really exist. Any seller who tell you differently are lying.
The difference with my box If for some reason apps stop working, its possible apps can be fixed/updated or replaced by new apps available in future unlike the tvpad where the box completely deactivate itself and can never be used again. I have been using my custom made box for over 3 years with no problems so far.