Tell us about what you use and why you like it.
I have Kindle on my iPad. I also have a Nook.
I don't use the Nook. Like ever. I like the Kindle one better. Cus it's in color, and I don't know?
I sometimes still prefer the actual feel of a book though. More often than my Nook or Kindle.
I use kindle on my Ipod - I email documents to myself to open later, Great for bible studies and small group teaching.