Hi --
I recently purchased Easy Sounds Organ Session. I haven't gotten into it in depth, but a quick survey of the registrations is encouraging.
The dirty organ voices use two DSP insert effects: one for distortion and the other DSP for the rotary speaker sim. I find the A100 voices to be a nice alternative to the Genos clean waveforms.
As keynote and others have mentioned, the price is reasonable and if you're into B3, what are you waiting for?
Pretty happy so far -- pj