My opinion of both the Genesys (I have it in my store) and Tryros (I had one for a few hours) are that they are both great in the style and sound department. I too have heard the MP3 demo's of both and the Genesys demo's don't to this keyboard justice! It's nothing like the few demo's I heard. One of the things important to know is that the Solton SG-1 which is the model of the Generalmusic Genesys sold by the German Company Solton, has been "tweeked" for the German market and doesn't sound the same as the Genesys. I love this keyboard and my customers have been blown away by the sound and style quality.
Do not judge Tyros by past yamaha keyboards like the 9000 series. You will be pleasently surprised when you hear the TYROS in person. the styles are exciting!
George Kaye
Kaye's Music Scene
Reseda, California