I just want to add this too. I honestly have yet to hear any arranger keyboard pull off some REAL funk music. Sure they've done a fairly decent job here and there, but what makes funk music so distinctive is that "wha' guitar. I'm not talking about the cheesy wha guitar you hear in arranger funk styles either. I'm talking about that wha guitar that so distinctive, that when you hear it you know that's down right "funk".

The guitar sound needs (scratch that I should say MUST) have that classic wha guitar where not only is the sound driven by the wha effect, but also by the strumming (meaning that funky strum with the pick sound) needs to also be in there.

Squeak