I think, if you're into on board speakers, like me - this is the best Ketron arranger to date. The Audya has deeper editing, and more features, but it's big, and has no speakers, so for my money - the SD60 is the top of the line.
Ok then I hope you'll like it good luck using it.
We await your reviews as always .. another question maybe
Prince AJ can answer is why is it called the SD60?