I have the Kindle Fire HD, which has a 7" screen (I think). I do most of my leisure reading (books and magazines) on the Kindle, and do some technical reading on it. I'd do a lot more if my library had more technical ebooks available for checkout.

As a bonus, I listen to music at work on it, it has games if I need to keep the grandkid occupied, and works fine for browsing most web sites (it is getting better all the time) and watching Netflix.

I don't mean to sound like an Amazon ad but I love my Kindle and carry it everywhere!