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.
WaveLab is well-suited when you want to apply a lot of VST FX processing to audio, or do a real-time recording and be able to hear how the FX processing sounds as you're recording. It is an excellent tool for recording in the studio. However, it lacks the sophisticated multitrack capabilities you find in a Digital Audio Workstation (DAW), instead of focusing on the features of an audio editor. It is also great for quickly opening, editing, and saving a lot of files because of how fast it is.
Realtime FX Chain - This is the big one for me. I always had both WaveLab and Sound Forge (along with some other audio editing programs, and using Pro Tools at school). Of the two, I preferred Sound Forge for its user interface and hotkeys, but I preferred WaveLab for its realtime FX. The ability to easily chain FX together and tweak them on the fly while the audio is playing is enormous for me.
Speed - Quite simply, saving a huge file in WaveLab is orders of magnitude faster than in Sound Forge. To this day, I don't know why that is, but it's just faster. Opening and saving files is a breeze in WaveLab, while in some other audio editing programs, it can take 30 seconds or a minute for a large file.
User Interface and Hotkeys - I've always struggled with the UI in WaveLab, and even after all these years, I am just much faster in Sound Forge. I used to have a job as an audio editor, where I edited hundreds of hours of interviews. By using the "Mark" feature, I could easily cut out silence, "ums" and "ahs," and other audio artifacts in Sound Forge. I struggled to do the same in WaveLab but was never able to work even a fraction as quickly.
Built-In Audio Processing - I much prefer Sound Forge's built-in audio tools like time-stretching, normalization, compression, and so on. WaveLab has many of the same tools, but I have not found them to be as easy to use, and in some cases, nonexistent (relying instead on a VST plugin).
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.
I have never contacted Steinberg, so I am not sure how responsive they are. Still, I've watched countless tutorials on audio editing and mastering in WaveLab, so I am pleased with the level of support available from the online community of users. It is a much-loved program among audio industry professionals, and there are all sorts of great tutorials, tips, and tricks available online.
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.
I am relatively agnostic about what audio software I use. I still use WaveLab to this day, 21 years later, for applications where I want to apply effects chains and tweak them in real-time. Sound Forge even can't do this for some reason. But when I have a lot of editing to do, I'll typically open Sound Forge instead, because I prefer the workflow of using the "M" hotkey to mark the audio as it's playing, and then quickly skip through markers and edit out audio artifacts. When I'm recording a vocalist, however, if I am not using a Digital Audio Workstation (like Ableton Live), then I do prefer WaveLab. I can apply VST effects in real-time to the audio coming in through the sound card input and playing back in their headphones.
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.
