These aren't recycled styles. I like the Yamaha Premium styles. Many of them sound just as good as the styles that are on the keyboard.
I like the Premium Styles too...especially with the Tyros4 and it's ability to use SA/SA2 Voices in the styles.
Most of my clients, as registered users, receive info on the latest Premium Styles via email, but it is also good to see the demo links posted here as well.
Both these styles will also be great starting points for making more styles (using Style Creator/Assembly), or one can change their character by re-voicing the parts, and yes, I agree they sound every bit as good as the on-board styles.
Ian
PS...I find the Premium Styles much better balanced than the DOO Styles.