You can't compare an SD1 to a Motif or Triton. The SD1 is a pro arranger workstation, the other 2 are more synth/studio related. Fair enough you can use a SD1 for studio work but the other 2 don't have styles on board and other features eg. vocaliser. If you are not bothered about on board styles, sell it and go for one of the others.
I have a Kurzweil K2500 and the sounds and sampling options on it are far better than any arranger keyboard, but it doesn't have styles onboard so I purchased and use this for a completely different reason.
Shop around and good luck.
Originally posted by ufriendly:
What is the general opinion of the comparison of these keyboard racks? Should I keep the Ketron or move on and sell it?