Customizing sounds is one of the most powerful features on an arranger that hardly anyone uses. Not many take the time to read & understand all the perimeters that can take a stock DULL factory sounding KB & turn it into a great Sounding one to YOUR Liking! Customizing & Creating sounds & styles is the key ingredient.
I laugh when I read about some of the store demos etc, etc, when I know any of the TOTL arrangers can be made to sound good if you put in the time to learn what to do.
But alas too many DON'T. Dont assume the factory has done this for you