The Kindle 2, and later models have the ability to read audio from the text aloud. So, as long as you purchase any model besides the original Kindle, you will have that feature.
And the operative follow on would be how do I get to this feature? I have the Kindle 2 that was bought this past December.
Thanks and looking forward to your response.
Here is the link to the owner's manual. See page 63 and also Chapter 8 to get information about listening to Audio on the Kindle: