Honestly, switching to Garage Band from Audacity for my podcast was a game-changer in the editing. I can do it so much faster with the tools that are available in editing--especially when you are dealing with more than one track to edit. I also think Garage Band could be fantastic for recording a whole album initially before sending it to be mastered elsewhere. And I think Garage Band could be perfect for sync music licensing because it's still relatively easy to use!
It is simply easy to use and serves the function that it needs to serve. Once you get the hang of the basic functionality and a few of the keyboard shortcuts, it will be extremely easy and quick to write out music. The option to go back and transpose to another key without writing the whole thing out again is crucial.
Once Sibelius is purchased, the user is given one year of unlimited free customer service to help in using the product. After that first year, users can either pay to utilize customer service with questions or use online helps, which are very helpful. One of the bigger issues I had was getting the sounds to work properly because my Internet connection wasn't consistently working well enough to accommodate the large files, which were taking up to 10 hours to download. The download would fail, and then I'd have to start over. I wanted to get a CD sent to me but was told this would be very costly, and so I declined. I wasn't happy with the lack of customer service in that situation but was eventually able to get the files to download and the software working properly.
I have used Adobe Audition before but found it to be hard to learn. Some of the features were very nice but too much for what I needed to justify the price. GarageBand is perfect for my needs and it came free with my Mac laptop. That is the best deal in town!
I have not used Finale exclusively, but I know friends/colleagues who have. In the past, it was complicated to transfer and edit any of the music they created for me because it would not transfer to Sibelius. As a result, I would have to request the edits I wanted and ask them to make the changes themselves. If I wanted to make any changes later, it was extremely inconvenient to do so, and I often chose not to, as I did not want to bother anyone other than myself to do any edits after-the-fact. Though it is now possible to transfer Finale files to Sibelius through creating .xml files and then importing as .sib files, the files still do not entirely retain all of the integrity of the original composition (as completed in Finale). Sometimes text and markings are missing, microscopic, or shifted once opened in Sibelius. Text fonts must often be edited. When working with other major music publishers, it has been extremely convenient and helpful to have the same software.