I am a B3 Lover, I play it trough different scenarios....
Organimation is very well sampled....sounds perfect. Real, warm, like a real B3!

Combi mode is the real thing...however, some sounds in program banks, are very good too..they can be used as they are or, to add them, mixed in combis preloaded by korg......On combi mode, you can access to each drawbar, and the Chorus/Vibrato...
The Vibrato/Chorus is well done (based on Korg internal effects). However, I really don't like the leslie simulation...Why some people keep on programming the leslie effect synchronized, if in real life It's not like that?


Leslie effect, are the %50 of the sound in a B3....
Also the overdrive, is really not good....but I was able to improve it....If you wan to play Progressive/Hard Rock,like Jon Lord, you will need to tweak the effects Overdrive...
So....my conclusion: Organimation, is good? Yes, don't even doubt it. Do
Do I need it? well if you play hammond sounds at live, yes! If not you can use a VST.
Having an M3 EXPANDED, with the brasswind EXB, with RADIAS and ORGANIMATION, is like to have a Kronos LE.....