Well, I'm just an amateur, but the Ketron SD2 is far superior to the soft synth's that I have. Of course, I can't make it sound like Mac does, but I'm very pleased with what even a dumb bozo like me can do with it. I was very excited about real tracks when I first got some. They have a nice sound, but I use the Ketron more than the real tracks now. I'm not saying that midi is better or worse than real tracks. These are all tools that we can all use as needed.
Stan