Regarding OTS You can set up as many OTS per Style as you required,its so simple and the same as Yamaha, called up by the pressing of one button.
Make up, say five OTS settings for a style or song,put them in user program, of which there are 126,then you have five seamless changes up or down using the advance or down button,and of course all can be saved to the usb stick.
Just to clarify, what you in fact do is make up the voicing for each OTS and enter it as a user program, depending on the number of OTS required this will identify the number of user programs used for the selected style.
Diki if you still have the GW8 perhaps you could find time to see if this also works on that board.
Gilbert.

[This message has been edited by gilbert (edited 10-04-2009).]

[This message has been edited by gilbert (edited 10-04-2009).]