I have a legal, registered copy of MWC and find it to be adequate, although slightly limiting.And the printing capabilities are rather primitive. I bought it so that I could include the musical scores of the songs in my book of nearly 400 sea songs, but there's no way to create a picture file that I could insert into Word.
I find NWC simply to be a great tool for either figuring out the score to a song, or for hearing what a score sounds like (for those of us who can't read music in our heads as if we were reading a newspaper)