thank you all of you for your helpfully answers

i have some other questions please?

can i do everyting on s900 that i can do on or700? i mean that, can i take a voice or a rhtym from a or700 and put into s900? if so; there is no need to think buy or700 except price?

i think i will decide between s900 and s60.
what about them. yes 76 keys very nice future. What about voices? which one has better voices? especially grand piano voice?

and which do you prefer between these boards and WHY?

thanks again

[This message has been edited by aramis (edited 02-22-2008).]