[Art]

OK...but first, take a look through this site to see what it has to offer in the way of individuals or perhaps your business.

Nice variety of TTS voices available. One might suit your programs' needs.

http://www.ispeech.org/

[Freddy]

This seems like one of the best solutions I have seen so far. But as one would expect it's pretty expensive. Good find though, in time I can see these getting cheaper as companies compete.

[claude2]

I knew a little iSpeech, they are expanding the choices in voice