The Roland sound is totally up to date... BK9 is a great keyboard...
However, the soundset still lacks beyound the FA06, which lags behind the Integra-7
I would have loved to see an arranger build around the Integra-7 sounds...
Myself i bought a use FA08 in almost brandnew condition for €1100, at a dealer
I would guess a used BK9 should be around €1300