Russ,
I know how much you like B3 sounds and the korg microarranger will not disappoint you! You can control the leslie with the joy stick. The organ sounds are a real plus in this little board
The organ, electric piano and a few other things on the microarranger is what still makes me consider one if I could get used to the Emenee organ key feel. I had one of those as a kid.
http://www.youtube.com/watch?v=h1kTcY88Qxg