both software and hardware here,
the B4II, the usual lot of sampled organs even some IOS stuff
Hammond SK2, Kurzweil Artis 7(btw look for the tweaked dual rotor patch/object available really a difference)
Kronos-X. I can use a Vent or lester K for rotary sim
IMHO the keyboards are much better, the real time control, the feel of the keys, the sounds, the down side is dragging the boards into my studio to set up..
also depends on how naked the organ is in the mix and the type of music John Lord distorted B3 or some Jazz organ...