I don't know that it's THE coolest but it's among the top 3 for me....the larger tilt up color screen on the Tyros. I also like the ability to channel different channels to the 4 outputs of the Tyros, great for recording to seperate tracks, for the mix.

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jam on,
Terry
http://imjazzed.homestead.com/Index.html
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jam on,
Terry
http://www.artisans-world.com/