If you are a little bit curious about how the yamaha megavoices are sounding with the Ketron SD2 and vArranger, you can listen it here :

http://www.varranger.com/audio/vArrangerYamahaStyles.mp3

The original discussion was here, where a french man posted some yamaha styles from his Tyros KB and mp3 recordings, and asked me to play the same styles with vArranger and Ketron SD2

http://varranger.com/vforum/index.php/topic,868.0.html