Just purchased my new CVP-809 (heavily discounted as the 909 is now available). I am assured that the styles are identical to the 909 series.
Also, other than the one Bösendorfer Binaural sample voice, which was inherited from the CLP line, I believe the voices have not changed.
Am a huge fan of PSRTutorial and used it extensively to ascertain which Yamaha Arranger to ultimately purchase.
Why hasn't someone developed version of psrtutorial.com dedicated
exclusively to the CVP product line? Although much of the information is applicable (User interfaces are "close"), there are still a number of CVP features that are exclusive to the CVP, and vice versa.
Just curious..