THUNDERCLAP82 I was very eager to try Montage and adopt it for my main screenwriting software. While the GUI design is nice and very Mac-like, there is one big problem with the software: page breaks. By that I mean when you are writing dialog in just runs onto the next page. Proper formatting would include the characters name as it re-organizes the page. Montage doesn't do this forcing you to do it manually. But then, if you make revisions, then there are extra page breaks and have to go through and clean it up all over again. It's very time consuming and not professional enough yet to justify making it your main screenwriting program.
(Version 1.5.3)