I concurr with all said above so far, this keyboard is now the undisputable leader in its class, i've owned them all, and none of them have come close to replicating the sound of Audya, the improvements in the 41b upgrade are fabulous, and i'm looking forward to more upgrades re styles, and other programming improvements, like being able to include the into endings in the registration memories and so on, can,t see any limitations on Audya now, looks like a stable OS that can be expanded!!