My question concerns opportunity of buying a tool like Sibelius, very expensive in Europe.
In a certain way BIAB and DAW programs as Logic, Performer, Sonar allow something less sophiticate than Sibelius,
to enter some chords, lyrics, ... Sibelius here costs more than Logic Studio for instance and you need to learn a new tool.

My goal is to keep trace for myself of some of my arrangements, not to publish them, give a copy to another musician
to play the tune with me, .... I don't compose, I only arrange tune from other people.

So what are your advises ? Go on with paper, or use what is inside BIAB or DAW, or Sibelius is more easy ???