The reasons...the BK9 could not replace my G70 as the primary keyboard...I refuse to give up the G70's...touch screen, 76 keybed, after touch, harmonizer, and non menu driven controls..
But the BK9 is sure to find it's way as a replacement for the BK5 (secondary keyboard)..
If the BK9 meets your needs ..buy it...if not...just pass on it..
I don't believe there is another keyboard with the same credentials on the market...with a street price under $2,000..I think it will do well..