Get it. Get it. Get it. Get it. Get it. Get it. Get it. Get it. Get it.
I'd like to add a comment to Tinjaw's remarks: GET IT!!
I've been using Text Aloud for some years - used to use it all day long while driving big trucks all over North America. It has read literally VOLUMES to me. Also great for proofreading your text for final edit. It's amazing how often you can overlook your own mistake in the 'printed' page especially when it's something that didn't trigger the spell checker, e.g. contextual errors like mistyping 'that' instead of 'than'.
I have AT&T Natural Voices but prefer the NeoSpeach offerings. Ten out of Ten!! Get it!