Just to add Diki, as long as you are chuffed with your little BK-9, that's all that really matters.
It is a fine instrument in it's own right, and I am glad it works for your purposes.
I won't tease you about it anymore.
Play and be happy.
Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.