I had a good listen to the BK7M today at my dealer. I was very disappointed with the styles. They seem to get more fluffy with each generation of arrangers. Understandable though as the manufacturer can't put together a new unit and leave the old (basic) styles in it.

But basic styles are what works best, unless you're not a great player. Then you want all that "fluff" in there to fill out what you're unable to play.

I thought those styles sounded like Lawrence Welk music. Or, an entry level arranger keyboard.

To be fair, I didn't hear it under ideal conditions. But when I played a keyboard over the arranger, I didn't feel any real "punch" behind me. Only a lot of "fluff!"