I finally finished the composition of my Sinfonietta, a thirteen minute work for large orchestra, and I am extremely grateful (and indebted) to MuseScore and its team of developers and supporters. I'll post a link after its premiere on Sept 13, 2019.
While I've been using MuseScore for several years, the improvements released this year have had a strong impact in its usage as an aid for composition. Not only the superb rendering of sheet music, but the possibility to actually play the music with a more than reasonable and controllable resemblance to a real performance!
The following features are really invaluable:
1) The autoplacement feature. It allowed, for instance, to produce a professionally looking edition of 34 different parts in less than a day of work (most welcome when the deadline is knocking on the door).
2) The high quality of the General Soundfont (notice I'm not referring to the HQ version, but the normal one). This yields an out-of-the-box solution for most of the composer's needs. Like having at our disposal a real orchestra to test passages, timbral combinations, experiment textures, etc. Luxury!
3) The possibility to resort to other soundfonts to complement those sounds that are still lacking.
4) Single note dynamics. There are no words to describe the happiness of being able to listen to the music coming to life with this single feature!
5) The possibilty to add custom tempo changes and mimic what human performers do.
6) The extreme flexibility to tweak so many parameters that the very few things that cannot still be done with out-of-the-box features can be accomplished as workarounds.
7) Last but not least, the unbelievable and marvelous support system and the incredible people behind it: Marc Sabatella, JoJo Schmitz, mike320, among many others!