I use the Kindle App on the Iphone and love it
I have also used the Kindle and i think it is genius.
Pros:
You have access 350000 books and magazines online from Amazon and it downloads to the Kindle is a matter of seconds.
The display is designed to be legible even in heavy direct sunlight.
Lightweight (no need to lug or store books)
Most all books can be purchased at 9.95 USD
Lots of free books you can download
No internet required to download (3G)
Sample books before you buy
The cons :
Can't read in the dark without a light
The buttons are sometimes hard to press
Text To Speech is robotic
You don't get the feel of an actual book.
