Let's see:

BK7m=1000
Controller=400
Display for Lyrics=100
Mis= cables, damper pedal, etc=100

Total=1600.00

Will the Roland BK7m will sound better than the Yamaha PSR-S910 that I can purchase for the same price?
The S910 will be miles ahead in sound, styles and value (Roland arrangers usually have a very short life spam in the market).

I was considering one, but I think I am going to pass, at least that some body in SZ post a out of this world review.