According to the Demo DVD of the Tyros 2, all the voices of Tyros 1 are included with the Tyros 2 and many more have been added, also the overall sound system has improved making the Tyros 1 and Tyros 2 seem like chalk and cheese.
As to the S900, I think I am one of the few on SZ that has heard it played live, (Both demo and in concert) and I can assure you that it is way in advance of the 3000.

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).