Gunnar,
I had similar feelings when I purchased my X-1. (My previous keyboard was a KN5000.) I purchased the keyboard from a dealer in another state....George Kaye. After a day of banging my head against the wall I called George and he was quickly able to answer all of my questions. Roel's comments apply for the X-1 as well as the SD-1. It's not that it's difficult to learn your way around it. There are just a few "peculiarities" that you need to know to make it easy to operate. Hopefully your dealer or one of the SD-1 users on this forum can answer your questions. I'd hate to see you give up on this board without knowing what it can do. I have absolutely no regrets from switching from Technics to Ketron. Styles/sounds are awesome!
Bob