Yamaha have never made good Hammond emulations, however the Genos is the best so far.
The SD9 is also quite good.
If you want the best emulation (And you don't want to go for a genuine organ model)in an arranger, (And that is currently still available) then the Korg is top notch, with the PA4x being really top notch.

Bill
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English Riviera:
Live entertainment, Real Ale, Great Scenery, Great Beaches, why would anyone want to live anywhere else (I�m definitely staying put).