>> I wonder how noticeable the tonal difference is really going to be between 64 and 96?

Probably less than what the naked figures indicate. From what I've heard, the tonal improvement from PSR2000 to 2100 is not obvious, yet the wave rom has been doubled from 16 to 32 Mb.

I think most of the additional memory goes into just some voices, which then sound quite a bit better.

Georges