Since there are so many options out there, there isn’t any one computer that works best with Audition or Audacity. For Audacity, you’ll need either a Windows computer that supports SSE2, has Windows 10/11 (32-bit or 64-bit) with at least 4GB of RAM and a 2GHz processor, or a Mac running macOS 10.3 High Sierra up to macOS 13 Ventura, along with 2GB of RAM and a 2GHz processor.
Audition has slightly higher requirements. For a Windows device, you’ll need a multicore processor with 64-bit support, Windows 10 (V20H2 or later), 4GB of RAM and storage, along with OpenGL and an ASIO supported sound card. For Mac, you’ll need a multicore processor with macOS Big Sur v11.0 or later, and OpenGL support. In general, you should aim for higher than recommended specs to have a smooth experience.