[sciurius]

I have a quality (though brandless) stand and a brandless tablet adapter that nicely fits the stand when I remove the document holder.
                   
I needed to replace one screw (see image #4) since the original screw was just too thick to fit the slits in the head of the stand.
During rehearsals I usually use the stand with the document holder fitted, so it is easy to put on a piece of paper, a pen, etc.