Who knows ? I always have thought they (Yamaha drum sounds) are just way overdone. Probably some programing engineers idea of what drums sound like.
Also to my knowledge, Yamaha is the only company that sets up drums in such a way that you can't change the volume of the various instruments in a kit. Only thru velocity and channel volume.
Korg arrangers on the other hand,imho, has fantastic sounding drums. They remind me of the way my brother's drums sounded when we played together. I have several fine ample libraies here to use including BFD, DFH and Session drummer but I think only BFD beats the Korg arrangers drums. And that's only because you can vary the close mic and room mics.
RE Korg styles ? They sound great to me. More like 3 or four guys jamming than the highly polished Yamaha styles. I suppose that's why they make different flavors of ice cream, so everyone can get what they want.
Korg os ? Heck I've had a pa80, never moved, sitting in the rack for nearly 5 years and I can barely remember how to select a style. Unuserfrendly would be a real understatement.
Danny
[This message has been edited by pianodano (edited 09-27-2007).]