I use registrations all the time. I can't use the panel organs on the 740 because they have no touch response so I'm forced to use the XG organs. They're not nearly as good so I have to use two voices to get anything like a good sound as well as setting some effects. This means using the registrations so that I don't have to set everything up every time I want to change. I would like the 8 buttons on the 2000 because 4 just ain't enough and it takes several button presses to change banks.