You may want to check out the Digitach VR, which essentially has the same specifications as TC's Vocal Prism. I just upgraded to the VR and used it during three live performances last week. Everyone said they loved the sounds and how realistic the voice quality is. One person that was sitting in the bar and during the break came into the room where I was playing and asked where they other guys were that were singing Kokomo. Both are excellent vocal processors and relatively easy to use, however, I believe the Digitech is a bit more user friendly.

Cheers,

Gary