I ended up going with the Kindle Touch for the e-ink screen. I do enough on computers and didn't want another backlit screen to read on too.

I DO like that with tablets, your library looks much more flashy than on an e-ink device, but otherwise not worth it on my eyes.

One of the big advantages with the Kindle, and I don't know about other devices, but they have a great system to borrow books from your local library.

bossfan2000, a forum member and blogger, has a lot of these devices. I would recommend asking him. He pretty much buys anything that comes out and reviews them on his blog too. Here's a link to his newest one, the Kindle Paperwhite.