Diki, many of us do see the logic in it and know there is no rocket science behind them just adding a few keys. Look at it like this. One thing that ALWAYS comes up with Yamaha keyboards and the players is the issue of weight. Hell some are to the point that the PSR-S900 is their weight limit. I think Yamaha should make a 76er, but man could you imagine all the bitching about weight.... The issue of weight (for some odd reason) has always been more of an issue for pro arranger players than pro synth player. People are lugging around Motif XS-8's everyday to mulitple gigs, and lugging around the 76 keys synths too....., but for some reason (in general) arranger players want much lighter boards.