Which keyboard are you saying has the better vocal harmonizer? The Korg vs the other two? Actually the G70 has a great vocal harmonzier. It works great and is very easy to use. I would suggest all that get to demo the G70 to go into the demo and select vocal harmonizer and then select pitch correction tab. You now can sing amazing grace using the pitch correction and no mater what you sing or say, your voice is singing the correct pitch. This is fun and and a very good demo.
George Kaye
Kaye's Music Scene
Reseda, California