Gary
As i said it depends on the situation . Smaller venues Styles are fine but when you are trying to do Dance music which people expect to ssound like the original Midi files are great. Of course they need to be heavily edited to not sound totally fake.
I wish I knew of a Roland Midi to Style converter. I don't use many Midi backing songs now but would use far fewer if I had something like that.
And as we always say whatever gets the job done.