Spalding is close to being right as Ohrenartz is too.

Yamaha uses layered tones to make up most of their better sounds...these are not velocity switched to the point that only one voice polyphony is used at any particular time...Matter of fact most are 2 or 3 partials[tones] at a time..
The Yamaha 128 polyphony is a false assurance that you will not get drop outs...Drop outs are plentiful on the Yamaha..I would venture to say the Korg's 62 with it's allocation and usually no more than 2 partials at any given time are equal to the Yamaha's 128[using often 4 partials]..
I think Korg has priority set up better than the Yamahas also..
Both Korg and Yamaha can take a lesson from Roland on how to get the most out of polyphony limits..

BTW..when it comes to polyphony,the big test is how the unit handles playing over a voice heavy sequence..This is when you use voices up,,there is no getting away from it..Allocation is based on priority and here it will show...again Roland leads the way..

[This message has been edited by Fran Carango (edited 10-15-2005).]