Being an ex VA76 owner I can honestly say that I thought the sounds and styles in it were rubbish. I prefer my G1000 anyday over a VA76. As for Yamaha, never liked any of their keyboards especially the new Tyros.
The SD1 hasn't got any bad sounds in it to me. As for someone saying they have worse guitars and accordians - who are you trying to kid? The accordians are spot on and guitars when used with the expression pedal set to wah effect or distortion are as close as you can get. If you've got any sense stick with SD1 or better still, get the Genesys it rocks!