Kindle - Read about 10 books on it, got tired of it running out of juice despite me never using it.
My Kindle 3 was a pain in terms of battery, but worse was the struggle to get adequate lighting. I bought several light accessories. Feh.
A little over a year ago I bought the Kindle Paperwhite Version 2 for $99, it really is astronomically better than the Kindle 3 keyboard it replaced. I got to keep my titles and this Kindle is good enough where it's actually worth it to get content. I can even borrow ebooks from my local library for 3 weeks, which I've done several times. The readability of the Paperwhite is so good that it is on a par or better than actual paper and ink much of the time. If a book has much in the way of great photographs, that is lacking in the Kindle, however. With most books that's not the case, but for many it is. A really big advantage over Guttenberg technology with the Kindle is being able to highlight a word and get dictionary support. The Paperwhite has a touch screen so this is a snap. My old Kindle 3 Keyboard was a real PITA to get a word definition, you had to navigate to the word with a great many key presses to move the cursor, which totally sucked and was my biggest reason to upgrade. But when I saw the new screen I was, OMG this is great!
I do not have to use external lighting with the Paperwhite, it's back-lit. It is amazing technology. The new Voyager has better resolution, but I doubt I'd notice much difference, they say it's not worth the extra $80.
The Paperwhite has incredibly better battery life than my old Kindle 3 keyboard. I only recharge the battery every 3-4 weeks, I think. I have the fancy case for my Paperwhite, but I never use it. Maybe I will when traveling, but so far I don't use it.
I think that Amazon doesn't really make money selling Kindles. The profit is in selling you the content. Lately I'm getting most of my books free from the library, paper and ink or ebooks.