iOS's Siri voice is new in iOS 7 (upcoming). Sounds good to me. I hope this forecasts a good text-to-speech function in iOS devices, hopefully easily available to app developers. My eyes seem to be stressed (start to itch/burn a couple times a day), perhaps from years of computer use, and I've come to love audiobooks, and the excellent text-to-speech in the Kindle Fire HD. (It was the only reason I bought the KFHD, but it has easily been worth it for me.)
