I have a Kindle and iPad. I tried using iBooks on the iPad, but I much prefer the Kindle app. Simply because it allows automatic sync between the Kindle, my iPad, my iPhone, and the Kindle app on my Mac. I had the Kindle before the iPad came out, and read many eBooks on that device. Since iPad, I mostly read on the iPad or iPhone, unless I plan to read outside. Then the Kindle wins, hands down. I have read much more since I got my iPad. Probably over 100 books so far. With my work schedule, I don't have much time for reading. I like to read in bed. After my wife falls asleep, I use the iPad with no lights. I dim the screen and can read for hours without disturbing my wife.