Hi,

I just went from a PSR2000 to an S700. The sound quality of the mega voices and USB and IDC options were an upgrade for me.

However, going from a PSR1500 you would be getting Mega voices technology only. The mega voices do make the styles sound better but I don't see any more options other than the mega voices that are on the S700 that you do not already have on the PSR1500.

I would stay with the PSR1500 or upgrade to the S900. If I had a PSR1500 I would not have upgraded to the PSR700 at all.

It was suggested that I go for the S900 and not the S700 but the additional $600 was an issue for me and the only option I would have used would have been the articulation voices. I could not justify an additional $600 for that.

Hope that helps.

-Linda