The Wersi Abacus sounds great, but have you ever tried to lift one? If you are a gigging player then you would need a couple of strong roadies to carry your "portable" keyboard. And another thing - Wersi upgrades have to be paid for in spite of the considerable outlay for the keyboard itself. One thing puzzles me on the general keyboard scene: Why has no manufacturer made use of the BOSE Acoustic Wave system as speakers in their instruments? I, for one, would be very interested. Finally, why do so-called "professional" work-stations often lack speakers of any kind?
Mike O'R