I would say, for anything graphic, video, multi media etc... 2000HD, no doubt. Audio, midi etc... probably the Atari. I never owned one so I'm just going by what a friend of mine was doing with his Atari. It is possible to do more or less the same on a 2000 but not "out of the box". I would have to say though that the Atari was not nearly as professional as the Amiga 2000HD, definitely looks more like a toy.
:-)
