Uncle Dave,

Just bought the Tyros and I agree with the style simplicity. Don't know about the polyphony issue yet, haven't come across a problem ( I only play with 2 fingers at a time )

So far midi files have played back pretty straight forward, nice drums, overall it doesn't seem to have the impact of a Korg or Ketron. But very well polished sounding.

I would have to agree with you on the way Korg uses their Polyphony, I never had an issue with note drop outs with my Korgs. Even now my SD-1 will drop put on certain styles, and it seems to be the bass note so its even more noticeable.