I am only to discuss one item on Medeli keyboards. I check those out myself.
This are my findings.....I have more, but, only discuss the Styles.

I check the latino styles (since I am one), and to my surprise is a total copy (Badly made), of the Norteno and others as well....

The test is when you try the Intros in a Mayor tonality, then the same Intro but now in Minor....
Not just that, the musical Phrase that carries the melodic lines in Intros/endings and mostly in Variation D , play sour notes....o crash notes that do NOT go, is not pleasant to hear that.
Is evident that they are just making or trying to copy the work of somebody else without expending the money on research and development or even hiring a style designer.....one thing for sure, it does not have the capacity to play some Augmented or some diminish chords, forget about more complex harmonies....

Manuel