Somebody kind sent me an email and explained to me that Tyros also has better quality sounds in comparison to 2100, other than the Mega voices. In other words, more memory is put into Tyros sounds to get higher resolution of sampling. Now that is very important for professional recording in my opinion. When recording in a studio, you want your song not to sound coming from keyboard, but people feel that it is coming from real instruments and that when you play styles and record them, people should not think that these are styles but that these are sequenced songs track by track.