I'm another new Kindle owner. I find that reading on a Kindle is very different from reading a book. Particularly when I am reading a well-loved book I frequently skim down pages and my eyes flicker over both pages in view and I riffle through to find favourite passages. It just is not possible to do that with a Kindle. Yes, there are bookmarks and so on but a hand with a book can move through and around a book much quicker.
I am doing an evening class on Jane Austen and this week had to re read Sense & Sensibility. I have been reading it on my Kindle and because you eye really does scan side to side on every line I am reading the text with an intensity I havent read it with before but I am only half way through it and my class is tomorrow so this evening I will be going to bed with the book because I will be able to read it much faster.
For me, like Marti, it is going to be something that lives in my handbag for all those odd spaces of time when one is waiting around so I am only downloading old favourite books that I go to again and again. I am not sure I would want to read a new book on a Kindle.