ziggy, now that all the fighting is over I will add my .02 worth.

While I do not know about the Prism, I bought the Voiceworks from TC. The street price is $6/$700. According to TC, it has the latest voice modeling technology they offer.

As with all other debates here about sound, I listened to all the different harmonizers including onboard and to ME, there was not even a close comparison between them. Again to ME the Voiceworks was the only one that came close to sounding like real voices.

As far as ease of use for live, the VW is as about as straight forward and push the button and go as it comes.

The best way I found was to let the midi chords drive it.

I have not had to do any of Dave's tweaking to get the results that please me.
Terry

------------------
jam on,
Terry http://imjazzed.homestead.com/Index.html