I know this is just opinion but I don't think Roland does such a great job with their combo-organs/organ module...It all sounds too cheesy.

Also I listened to the demo's of the Hammond XK-3 and I wasn't impressed with them...But I think maybe it was just the demo's because so many people have been saying it sounds very close to the real thing. So I think the demo's are some kind of misinterpretation of what it really sounds like. If anyone knows where I can hear some GOOD sound clips of the XK3, please tell me I really want to purchase one soon but I wanna know I'll be happy with it.

Sorry didn't mean to take over this thread. But I'd say for organ sounds, go with Hammond, they seem to do the best job. I think they also have an organ module so you might look into that. NI B4 is awesome too. I use that for some of the recordings I do. I've found though that really to play an organ well, you need something that feels like an organ. Seems to make I difference to me.
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Ryan