sk,
Many are exactly the same such as the mega guitars. Most of the sweet sounds are there too. The new triple strike piano is awesome. So in short all are very comparable if not the same. The Tyros might have a few more, although I haven't been through all of the sounds yet on the Mo yet.

I will say the Mo obviously takes better advantage of the megas with the arppegiator.
Terry

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jam on,
Terry http://imjazzed.homestead.com/Index.html