Just picked up a Sony Daily Reader PRS-950
I finally picked up an eReader when I got a chance to lay hands on a working PRS-950 the other day. This thing is great. The size of the display is what I was looking for--small enough for easy portability, large enough for my aging eyes to read comfortably.
It does a great job displaying PDFs, which is what I've got most of my ebooks in. Though I'm now using calibre to convert a lot of my older ebooks in other formats, like .lit, into .epub, which the device handles really well.
I have to be patient when I load up a whole bunch of new books. I've had a couple of instances where it hung on me when I was reading at the same time it was updating its database (reading while pushing files onto the memory card at the same time. Don't do that.)
Also, the browser doesn't format web pages properly for the width of the screen. They get formatted for a wider screen unless the page's CSS happens by chance to format at a readable width. So there's a lot of moving sliders while reading web pages. It also can't read .html files directly off the device, which is disappointing.
Out of the box it's a bit crippled. The browser doesn't download, so you can't pull books from places like Gutenberg directly. It also doesn't recognise any organization in the file system.
However, I loaded the add-on PRS+ and practically all my original complaints at the devices shortcomings have been taken care of. It can now download from regular websites, browse the directory tree, and act as a calculator (but not RPN, unfortunately.) It still formats web pages poorly and doesn't have a full file manager that can, say, move files between device memory and its plug-in memory. And it still can't read internal HTML files, which would be nice for things like keeping a handy copy of the Java API Specification and other JavaDoc files on it.
I've got an 8GB micro-SD card in it now (nearly full as of last night--I loaded up my Java programming books), and I'm planning on picking up one of the Memory Stick Pro Duo adapters that accepts two micro-SD cards to expand it even more. It handles all the books well if you give it plenty of time after loading new book files to update its internal database of the media that's on it. If you rush it, expect crashes. I had several, and thought I had a corrupt book file.
Now I keep an actual paper book on hand when I go to do file transfers. I transfer files directly, I don't use the Sony Reader application or calibre for managing the files on it. I have three different systems I move it between, each running a different OS, so just moving files by hand works best for me.