I absolutely love my iPad for marking up PDF documents and I read on it for hours a day.
With that being said, I use my Kindle for fiction reading. When I use my iPad I am in my controlled environment, my office, and easily have access to power to recharge. My Kindle I can take anywhere with me and its charge lasts literally weeks. You can read in the sun. You can read in the dark, whatever you want.
Unless you need to mark up documents, the Kindle is simply better for reading longer periods of time. Don't get me wrong... the iPad has wonderful strengths (it turns pages faster, can do color, can do other things besides displaying books)... but if you just want to read, the Kindle is where its at.
With that being said, I use my Kindle for fiction reading. When I use my iPad I am in my controlled environment, my office, and easily have access to power to recharge. My Kindle I can take anywhere with me and its charge lasts literally weeks. You can read in the sun. You can read in the dark, whatever you want.
Unless you need to mark up documents, the Kindle is simply better for reading longer periods of time. Don't get me wrong... the iPad has wonderful strengths (it turns pages faster, can do color, can do other things besides displaying books)... but if you just want to read, the Kindle is where its at.