What can I say...? That hasn't already been said?
Perhaps just this... If I had paid $8000 for this, I'd have a pretty sick sensation in the pit of my stomach, right about now, knowing that this could easily be bettered with a $3000 arranger.
Until Wersi license one of the better general purpose VSTi's (Colossus, for example), and then develop a boatload of styles specifically for it, it's going to keep playing second fiddle to arrangers almost a third of it's price. It just seems such a waste to have the technology, and not use it to it's fullest advantage.
So close, and yet so far....
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An arranger is just a tool. What matters is what you build with it..!