FL Studio is great for quick audio editing, where you need to quickly make an edit to a song or add a new part to an existing song. Due to the included audio processing plugins, there is no need to purchase more to increase the software's capability. These features lend it to "out of the box" solutions, where quick implementation with no hidden costs is important. For serious audio editing and mix down, FL Studio is not well suited, as it is designed to be a good all round music creation software, rather than a dedicated audio editor.
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!
I gave it the above rating because it is an incredible software for music creators and even though it might be hard to use at first, but once you get the hang of it, you will never be troubled again, and in all honesty, nothing comes easy life, especially if one yearns to become good at. Same applies with FL Studio. In conclusion, it is a great software.
GarageBand has just a few clunky settings--otherwise, it is a very user-friendly program with lots of functionality. Beginners can get started pretty quickly with the program, while more advanced users can dig around and find plenty of other tools to use to tweak things within a recording or editing session
Audacity is a free open-source software that is only for recording and editing some audio, while FL Studio on the other hand allows you to create your own music, record your audio, edit your audio and many other features all for a small price. FL Studio has way more effects pre-sets than Audacity. Even though Audacity's recording features can come close to FL Studio, there are many other factors that led to me opting to invest in FL Studio. Many other music producers also recommended FL Studio; therefore, that's what I chose. I have used both software for almost 2 years each, first being Audacity and then I decided to get FL Studio and have been using it for all my audio recording, editing and music making ever since.
Because GarageBand is included on macOS and iOS purchases, and we already use an Apple environment at our office, it was an easy decision to go with the 'free,' included program for our basic audio editing needs. We did also purchase Logic Pro X, since it is the 'big brother' to GarageBand, but our volunteers tend to use GarageBand first because of familiarity and ease-of-use
Like I mentioned beforehand, it is slightly expensive but if you think of it, it is a lifetime investment.
FL Studio is also essential to have if one wishes to create music of their own or background songs because that way, you won't have to pay someone to create music for you.