Excellent point James. The arranger makers "do" need to make some changes if they want to keep the interest of future buyers. Arrangers can't continue to cater to the mature audience if they want to be successful. They need to start making these things appeal to the generation that's going to be replacing that mature targeted market.

I also agree that the top seller would probably be a lower end model. Both Casio and Yamaha have dominated the lower end market for years. It would be interesting to know the model and year from each maker.