The AI narrator sounds okay. The words are clearly pronounced. It mostly has a even tone and doesn't seem to give a lot of emotion, this is fair though. When it reads a quote within the text it changes its tone, which I think is cool.
Books
Book reader community.
The only thing I found annoying was that it read the chapter list :p
Try listening to a book from the Library for the Blind. They read everything. Every written word in the book. Only the page number gets skipped (although they tell you what page you're on when they change sides).
I once listened to a Harry Dresden book that was read by text-to-speech (back before they went back and had James Masters read all the books). It always said the word "wizard" (Harry's a wizard) sarcastically. It made it seem like all the other characters were making fun of him all the time and really changed the feel of the book.
Wish I could use this technology for myself to listen to non-fiction books. Even if it costs $10 I'd still feel it'd be worth it.
Check out speechify.com it's a genuinely good service.
Unless it has improved in the last 5 months, I'm passing. Somehow can't concentrate on their TTS. Might have to do with the stuff I want it to read.
Thanks for the tip though
I use @Voice reader with some CereProc TTS voices, all my books are now audiobooks.