Mixing Tips for Panning
I started using panning during mixing and found it helps clarity of each instruments. I also started using Reaper as a mixing tool instead of Audacity. I felt the sound quality of the rendered audio from Audacity is somewhat compromised. As for final mixing processing, I use the Izotope Rx.
Mixing article from Izotope : 11 Mixing Tips for Panning Music with Intention