which is best for music Atari or Amiga

[Thorham]

which is best for music Atari or Amiga

Depends. Amiga if you need to play the music directly on the computer, Atari if you don't need play the music directly on the computer.

Basically Amigas have better audio capabilities and Atari STs have better software. The Atari's built in MIDI port isn't so important here, because you can add one to an Amiga.

[Thorham]

I don't think you can you reasonably argue for the Atari ST sound being less distinct, unique and grungy than the Paula sound.

It's probably a lot more distinct than Paula, which is just a sample player.

Whether the software is "professional" or not has nothing to do with the topic.

Anything that you use to earn a living with can be said to be professional