I love my Kindle 2 very much. Between the Kindle and the Sony Reader, I’ll suggest you to go for the Kindle instead of Sony. The Kindle is better because it has free wireless and text-to-speech function. There are more ebooks you can find available for the Kindle, and books on the Kindle are quite a lot cheaper too. There are some good comparison between them here:

http://www.amazon.com/gp/redirect.html?ie=UTF8&location=http%3A%2F%2Fwww.amazon.com%2Freview%2FR3ULAFVHBGYVQP%3Fie%3DUTF8%26ref%255F%3Dcm%255Fcr%255Frdp%255Fperm&tag=moreinfo-po-20&linkCode=ur2&camp=1789&creative=390957

http://www.speedreaderxreview.com/kindle-2-0-vs-sony-reader-prs-700bc-comparison

And in case you don’t know, Amazon has recently put a price slash on the Kindle 2, and it adds in international wireless access and native PDF support… So take the chance if you want it.

Hope it helps