As much as I know, Nvidia Shield along with ZIDOOs are the best android boxes.
As for remote control -- is TV's RC not sufficient for your needs? I'm been using RC through the television's CEC interface. Works well.
Personally, I, don't care about Android at all. If the only thing your are going to do with the box is media center, than Libreelec is better solution.
Thank you so much for the advice.
Yes, the Nvidia Shield is the top, unfortunately it costs too much. About the ZIDOOs to which model do you refer ? ZIDOOs A5S ? ZIDOOs X9S is not compatible with libreelec.
The remote control of my samsung TV is very poor, it is not suitable for a media-center use, the remote control I am going to take the MINIX NEO A2.
Yes, the box android i have to use it mainly with libreelec, android i need it right to try some interesting app.