You know what's pretty cool? 

 Even being able 
to compare  entry/mid level arrangers to an 
initially much more expensive, but older instrument like the top of the range G-70, , within the same company.
It says a whole lot about how
 good the BK series sounds and how well the G-70 has
 aged. 

From what I heard in the on line demos, the BK series is pretty darn close 
sonically, and I actually thought many of the styles sounded better and 
more detailed.
 Now, if they could only come up with a direct replacement for the G-70.
  Ian