I will stay with mcufrined because they work now on Nucleo too which is a big plus.
I do not know how popular the open-smart are.
I am just new and I just did not know what I was buying.
But some new open-smart library could be solution too if the displays are popular so we do not confuse it with mcufriend.
The problem is that you buy something on ebay, they have no clue what they sell and takes you for ever to find out how to make it working. I am learning now so it will be easier next time.