Domenik,
As starkeepr me and one other people have been asking - there are three of us asking the same questions: you have not discussed the arranger functions !! I repeat, you have not discussed it.

This is an arranger forum. Have you ever played YAMAHA PSR2100 or TYROS ? 100% of the people here have this question in their mind: WHERE ARE THE ARRANGER FUNCTIONS ??

How is it compare to the YAMAHA's. And if the answer is "it does not exist" or "it is not important to us at the moment". Well, you are talking largely to the WRONG audience. Many of us will not buy your board. Gigging players like UD, Scott and countless others are relying on the arrangers to make their living.

I really suggest that you or someone at your staff gets familiar with the arranger functions of the Yamaha PSR2100 or TYROS and so you can discuss it intelligently here in this forum. I really think it would be a piece of cake for you guys to include the arranger functions and you will definitely captured the hearts of people in this ARRANGER FORUM and your keyboard if it does what you said PLUS the arranger functions then I think it becomes the GOLD standard to judge other keyboard with.