Hello, mdz 18 aa is more powerful and as i know i can install english language and google apk.But not sure if we can run 4k netflix.On the other hand there are 2 more devices mdz16aa and 16ab(global version) They are less powerful but has 6.0 .I wonder 16aa and 16ab same device ?And if i install english language to 16aa.Can they both run 4k netflix?
Stop looking at specs and comparing "power." If you want raw power get a shield. For everything else, you get the MDZ 16AB, as its the only one that actually runs Android TV .
The others run AOSP Android, designed for mobile devices. They can't even do HD netflix, let alone 4K. They are basically software duct taped to hardware, usable only as a mediocre Kodi device.