hi
i have a kn6000 and a wersi pegasus and use to have a wersi spectra. the bid diffreb=nce i found was how easy the spectra was to set up before playing, you could have 3 voices on the top manual and the bottom manual split and two voices on each and use the volume sliders to control them, its a better instrument to play if not using the backing rhythm. i love the sounds on my kn6000 and it works well with the pegasus too.
i do not think its fair to compair the keyboard to the organ as there so diffrent.
bill