luk,
I don't really know how the WK3000 sounds, but you can adjust the style voices to fit any board ( lots of work though ) . I think if it were me, I would consider an xg based keyboard, even an older one like the PSr 530 - 730 series, ( 530's can be had for cheap if you can find one ) or an xg soundcard / software module.
I have the sy100xg software module. It could be better, but it works fairly well just the same, and the xg voices can be edited in xg edit just as can be done on an g based synth / keyboard .
AJ
_________________________
AJ