The only difference between these two products is the stand alone chatter player. The clip collection is the same in both products. X-ATC-Chatter has a player that works with X-Plane and FS-ATC-Chatter has a player that works with FSX, FSX Steam Edition, P3D V1-5, and MSFS 2020. Either product will work with Pilot2ATC.
If you plan on using the product on both X-Plane and any of the Microsoft based simulators you only need to buy either X-ATC-Chatter or FS-ATC-Chatter based on which simulator you use the most. You can then download the free demo of either one and copy the clips from the collection you purchased to the demo player of the other product.
