Although I have a solid collection of quality midifiles from several manufacturers, I rarely use it.
When I use midifiles, it's for listening and learning tunes. Sometimes only to copy the lyrics in it.
Why I do not use midifiles as playback is because when we were active, there were many who
only used midifiles, and to me all sounded like the same player no matter what name they had.
So for me, the solution was to customize styles for our use, which meant we did not sound like
everyone else. (At Technics that was quite easy...)
We were Duo or Trio, and then we should not sound like a Big Band or a major symphony orchestra.
Just my 0.0002$