[wrxtasy]

And which do you think box arm works best? What do you say to the odroid c2? I'll buy sat tuner separately on enigma.

You need to be buying an external networked HDHome run if you want TV Tuner certainty with any ARM Amlogic device because you cannot just plug any old USB TV Tuner in and have it work. They use an old Linux Kernel and lack modern DVB tuner support.

I know of no one running a AML LibreELEC box connecting to an Enigma.

Intel and RPi's are running a modern Linux Kernel and have much better USB TV Tuner support.

BTW: Any Kodi Box can remap its remote control buttons with the Kodi Keymap editor Addon.
Which is downloaded from Kodi Repository > Program

To Stop video playback in Kodi Krypton for example is a Long press of the remote control Back button. Sounds like you need to get familiar with Kodi remotes and Short and Long remote control button pressing functionality.