Luka,
the SD1 plus has a new piano sound on the hard disk (a rock piano, with a rather brilliant sound), some new styles and about 200 new song registrations (with settings for styles, left and right hand sounds, etc). The only difference, hardware-wise, are some colored buttons: that's all.
I am sure that all these features will be made available on one of the Ketron clubs (Dan 2000 is a regular on the France Ketron Club, so... )

[This message has been edited by Dreamer (edited 06-26-2003).]