Good forthright review Deane...many arranger players use the instruments exactly as you do, and will be interested in how "user-friendly" the BK-9 is, as well as the availability of useful styles and overall out-of-the-box sound.
I also appreciate your unbiased attitude (something I don't have being a dyed-in-the-wool Yamaha fan)...very refreshing.
Keep the reports coming as I will pass on your observations to those I know with interest in the BK-9.
Ian
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.