I'm one of those people who moved from a Yamaha arranger to the Wersi. Yamaha didn't support the 9000 Pro like they claimed they would and after going back and forth with them, I had no other option but to dump Yamaha altogether.

I bought my Wersi sight unseen and based upon comments from other Wersi users I contacted and I haven't been disappointed since my purchase. The first time I switched the Wersi on I knew I had made the right decision. Its build quality, sounds, capabilities, and ease of use are unmatched by any other arranger.