Two items about the Kindle, now that I've been using it for awhile.
My Kindle needed recharging while I was actually reading. (I would have recharged it before hand, but didn't realize it was low. My fault.) One good thing about the Kindle is that you can still use it while it's charging. Unfortunately, the cord plugs into the bottom of the Kindle. Since I read with the Kindle propped on a pillow in my lap, this was somewhat awkward. I would like to see the charging port moved to the side of the Kindle. Since many Kindle covers attach to the left side of the device, the charging port should probably be on the right side.
I've been reading Audition, by Barbara Walters. While there are often photos in biographies, I wasn't sure if there were any in the paper version of this book. There are. They are also in the Kindle version. The Kindle screen is, as I said before, black and off-white. While this is fine for text, it isn't very good for photos. You might recall that photos, in most books, are printed on a separate type of paper and usually inserted in the center of the book. This paper is whiter than the text pages, and usually at least semi-glossy. There's a reason behind this. It makes the photos look much better. The photos on a Kindle, can be seen, but not well.
Other than that, I'm happy with my Kindle, and recommend it to anyone who reads a lot. Of course, if you wait for the paperback versions of your books, then you'll pay less buying the book. But if you buy the hardcover editions, you'll definitely pay less.