I've heard the Genesys and it sounds wonderful and is filled with great features. But for the price you would think it would have at least 128 note polyphony. Some people might not mind 64 note polyphony but from my experience with a 64 note arranger dropouts are a common occurrence on complex compositions if your not careful, at least on my arranger. Maybe General Music routes their polyphony in such a way that it might not be such a problem on the Genesys.
I believe all of these polyphony problems on Arrangers will be solved in the not to distant future especially with the vast increase in the Arranger market worldwide and Manufacturers wanting to capitalize on it and satisfy the end user with a "fully" usable product.
Regards,
Mike