The sounds and styles in general sound excellent for that price. (In particular, the lead keyboard voice on 16-beat demo was especially impressive.) In the Yamaha realm I would guess that this keyboard's sounds and styles would be comparable to a PSR-550 more or less. Considering that the 550 is priced higher, it seems like a good deal in that aspect. Of course, sounds and styles are not the only measure of a keyboard's quality!