Hi John - you say:
''On the Kn7000 you have 20 + 3 non-preset styles available by touching 2 buttons. On my Tyros3 I have hundreds of styles available by pressing 2 or 3 buttons. It is the same for songs and registrations. It is all coming from a memory stick. (USB)''
If you had my KN7000 memory stick better known as an SD Card you would equally have hundreds of registrations/style files call them what you will immediately available to you...so no difference there...