does anyone use this feature on Acrobat or Ebook reader.

I rarely find use for this feature as many of the books that I want to read are available on audiobook formats.

I use mine all the time. So far I prefer Ivona, since they have the best British voices and I read a lot of book set in Britain. I have a young child in the house so concentrating on a book is almost impossible. He also love to listen (and talk to the tablet when it is talking ) so its a lot of fun. Not only that but being able to continue the story while relaxing or during the migraines I get without losing my spot in the story is very nice.