I have a PSR2000 that works fine except has no usb for storage etc. I was considering upgrading it to a S700. Since many of you have PSR S700's or the S900's I was wondering if it is worth the money to upgrade to the S700 from the PSR 2000?

Besides the obvious USB functions missing on the 2000 are the sounds that much better and new functions? I just use this keyboard at home. Not a performer.

Thanks,

Lin