Sound wise it does not seem much different from the Yamaha S950 (Itself not exactly stellar) for the same price, so I think Yamaha had better start looking over its shoulder as Roland have a habit of launching a good model, and then at a later date bringing out an update that takes it to a whole new level. (Look at the G70 which was derided by all but Roland Diehards when launched, but the V2 update made it one of the best arranger’s available at that time)
Yet to see Yamaha bring out an update without forcing you to buy a new keyboard to get it

Bill