Asena,
64 polyphony on GEM sk880 is very good. I never ran out of polyphony and my songs are very complex and rich.
On sk880, in addition to the 8 megs of backed ram, one can also add 16 megs of non-backed ram. I do not know if this can be done for Genesys, or how much RAM can be added if it can be done.
You are correct that one cannot extend the 8-megs battery-backed ram, but maybe one can add non-battery backed memory modules (it just will not be backed).
One thing remarkable however, is that there is no ROM in Genesys but Flash. In other words, it is possible that you sample your own voices on a dedicated sampler or virtual sampler on a computer and then add them to Genesys permanently. That is an excellent feature. So maybe this feature, if I am describing it correctly, can true more than susbstitue to any ram.
However, All future keyboards will have at least 128 polyphony and more rom/ram.
[This message has been edited by sk880user (edited 09-09-2003).]