I use a Digitech Vocalist 4 which gives me great harmonies but is a little less convenient than an onboard harmonizer. I have to set up my keys (F, Bm, D etc.) and harmony choices and step through to get to them. This makes me have to be very organized. I rented a Korg PA 800 and really liked the freedom of just quickly kicking or tapping in the vocal harmony when needed. The sound was not as good, however, as the sound I get from my Digitech stand alone.
With all of the above in mind I am very interested to see what kind of sound I could get with the onboard vocal capabilities of the PSR S950.
Also if I could record to an mp3 file it would be really be convenient for sharing files with my songwriting partner. Any insights appreciated! This is guitar generated but will give you and idea of the harmony sound I'm looking for.
Here is a song I just wrote recorded with Vocalist 4 and PA 80.