content: I have heard about that program and tried it out but the main problem is that the files don't transfer easily to another program. I have been doing most if not all of my writing in Sibelius and so if I were to switch programs, I would essentially need to rewrite all of my scores into the new program.  Also, as just a side thing. Music writing programs have their own OS so to speak. Writing music in Sibelius is not the same as it is in Musescore or Finale (those are the three major ones right now with Sibelius having no dev team for a number of years the last I heard but the program runs perfectly).  TL;DR Switching to a new program would be like starting from scratch all over again.