Yes, the Dynamic Accomp on the EM2000 is a very interesting feature. You can go into the menu and adjust exactly what the volume parts will be for different left hand velocities. You can even have some accomp instruments turn off totally at low velocity and others turn on, and then set them to opposite values for high velocity. That way, only a few instruments play, but it makes the style sound very different. I must admit, even though I always leave the feature turned on, I don't "twaek" it much. I do wish my other keyboards had this feature. It adds realism. I've heard the Technics KN3000 had it, but they dropped it on the KN5000. I think they put it back in on the KN6000.
Tom