All this puzzles me. I had a Roland BK-7M and here are samples I recorded
right out of the box with no "programming" by me at all. I had the BK5 and returned it because unlike the BK-7M it need a lot of man hours.
Here are the BK-7M samples I recorded what do you think about the sound?
https://www.box.com/s/81w0ghhr0gvcccvtejgfDeane