Apple Logic Pro /LogicExpress Discussion

I've been tinkering with the organ sounds for a while now, but just not satisfied with them.  Using out of the box sounds, what is the best way (preset or custom) to get a Hammond B3 / Leslie combo sound?   If there isn't anything good out of the box, what aftermarket do you recommend?

I've you're not sure what I'm looking for, play the chord sound button on the right of this wiki page:
http://en.wikipedia.org/wiki/Hammond_organ

Leslie speaker here:
http://en.wikipedia.org/wiki/Leslie_speaker

Thanks,
Bryan


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