These days the quality comes from the microphone, mic placement, mic preamp, Analogue/Digital converters - not the software. You can get a great or lousy quality audio recording in Audacity, garageband, Logic or Protools, all depending on the quality of what goes in.
We have and use many pieces of audio software to run JoeFm. Some of the audio software is FREE, and some are very pricey. One program you may want to look at is Adobe Audition. What are you exactly trying to do? I might be of more help to you if you could answer this question.