Sony Reader Pocket Edition PRS-300 (silver)

Pros: small enough to fit in a jacket or trousers hip pocket
compact enough to take everywhere
good contrast and screen clarity
good battery life
will charge using iPhone or iPod charger (?)
pleasurable reading experience
pages numbered

Cons: I can find no cons.
The weaknesses mentioned in the review are minor things that no not impact the reading experience. A larger screen would hold more text, but I bought this reader because if its portability.

Summary: Despite lack of fancy features, the PRS-300 is perfect for my purpose - reading books. It's easy to hold (I use the optional leather cover); it goes in a jacket pocket and even in trousers hip pocket, and I do find myself taking it everywhere to grab a few minutes reading, even in places where I might not take a printed book. It's the sheer convenience of having this reader with me that makes it outstanding.

After one week of heavy use, the battery still shows full charge. I found that the iPhone/ iPod charger does seem to charge through the USB port, but I may be mistaken.

I chose this because screen contrast and clarity are better than the touch-screen PRS-600; the larger screen has a preferable page layout, but for me contrast is more important.
The review complains of sluggish page turns - I often flick back a few pages to read a prior passage, and page turning is still as quick as with a paper book. The pages are numbered (unlike Kindle) and reformat according to font size. Even if you read several books concurrently, the Sony remembers your page in every book you've read.