BN,
All of them (PA1X, G.., SD1, Tyros and PSR3k) have virtual drawbars.
On top of the drawbars there are 'preset' organ samples. (e.g. Jazz Organ, Overdrive etc.) The Yammies sound very nice including the Leslie DSP.

I did not use the Tyros harmonizer yet. The SD1 harmonizer is mono (!)
We use the TC Voiceworks.

The Tyros styles (especially the PRO-types) are excellent and perfect for the gigs we have. Beautiful arranged with great instrument choices.
All (EMC?) 'converted' styles that came from Solton, Ketron, Roland or Korg sound poor and not Tyros worthy