I bought a Galaxy SII a couple of weeks ago with no particular expectation that it would be any good for reading. But I haven't switched on my Kindle 3 since!
The display on the SII is amazing. Even though it's backlit LCD and smaller than the Kindle (less on the page), it is still very comfortable for (indoor) reading. I've tried reading ebooks on phones before but this is the first one I feel comfortable with. The next time I go travelling, the Kindle stays at home!
All my books are Mobi/Kindle and I'm using Kindle for Android.
LJ
www.laurencejackson.com