Silva, it depends on what sounds you are playing at the time..as you would be aware some sounds on 'boards use 4 voices..(1 voice= 1 note of polyphony)so if you play a 5 note chord, with a sound using just 2 voices, you are in fact using 10 notes of your polyphony..then if you use the sustain pedal over that chord, those notes are no longer available in the total polyphony(until you release the sustain pedal of course) so then you add say a bass sound/s (most of which also use 2 voices) then the pads/strings/brass/guitars a lot of which use 3 or 4 voices, then throw in drums and some more held notes via the sustain pedal...and hey presto you start getting notes dropping out...at least on most modern 'boards they give you the option of assigning preference to high or low note dropouts..for what its worth i hope that helps..........oh and in answer to "to the genesys" its not really a pissing contest as to the number of notes, its just a factor to be considered, along with your playing style, in the original purchase...traditional piano players, IMHO, need at least 128 because of how they form chords and melody chops, a person who is happy using the preset styles configuration using single finger modes, would pretty obviously not have too many problems with 64 note polyphony. as you are aware the ProMega 2 has 160 note polyphony (the 3 has 320) and they are pretty much just digital pianos...anyhoo

peace, out