For the price and my use, I'm still rather fond of OLPC's XO laptop. Yes, it's heavier than a dedicated e-book reader (three pounds). Yes, the keyboard is made for smaller fingers. Yes, it's tricky to buy, with their holiday-time donor programs and mandatory donation. Yes, it looks silly.
But, it does a really nice job for reading just about anything. It has a 7.5" screen isn't standard technology, so there isn't a specific resolution, but it acts between VGAish up to what I'd call "absurdly clear," depending on lighting conditions; for example, under sunlight, you get crystal-clear display with the color washed out (it looks like an enormous pocket calculator display). That might not sound great, but I've never thought it was a sacrifice, and I even love the black-and-white mode. Oh, and since you can install whatever (Linux) software you want, you can always zoom in on the images where you feel cramped, and it renders pages at a pretty good clip.
The battery might not compare well with the dedicated devices, at about four hours. However, they've been steadily improving the power saver software, and it recharges in about forty minutes, which is nice. Add in the long-range WiFi (with Mesh), camera, microphone, and speakers, SD and USB ports, and to me, it blows away any of the other devices out there. The exception would be the Kindle's non-subscription cellular Internet access, which I'm tempted to buy in hopes of connecting to other devices...
The machine is also rugged. I've dropped it on a tile floor more than once, and it didn't miss a beat.
About the only thing I don't like is that there's a (good) feature where you can fold the machine like a tablet PC, but it's not a touch-screen. That means it breaks the flow when it's time to move to the next book, since you have to get at the mousepad and keyboard UNDER the screen. Oops.
Mind you, if they can drive the Fujitsu box's price down substantially, that might be a contender, but certainly not at that price point.