Hi John.
I've had a s910 for the past 6 months. At first I just wanted a keyboard easier to move than my KN7000 and I spent many, many hours working on getting it to sound like the 7K. However, after working out the challenge with the voices I found myself enjoying the styles on the Yamaha, and then found many more neat styles on the internet - many from the Tyros. So,I've been converting the Yamaha styles to the KN7000. This is a slow process, but it's bringing new excitement to my true love. Frank