Been waiting a decade for a decent TTS app. Still waiting. TTS technology is retarded back almost the 80's. I would advise getting a good microphone and the free program Audacity, then using it's bitch bending and other features to change either your voice, or maybe some friends. You would be suprised how far you can push a bad impression into a decent performance. You could also look for voice actors in your area will to work for cheap to free.

mo·nop·o·ly  [muh-nop-uh-lee]
noun, plural mo·nop·o·lies.
1. exclusive control of a commodity or service in a particular market,
or a control that makes possible the manipulation of prices