I've written Misha about my favorable experiences with the 770 version of FBReader.
I've also written about them at
Teleread and
Internet Tablet Users blog. I've also posted screen captures of the program running on the 770 so people can see how much text displays on the 800-pixel-wide, 225-pixel-per-inch display. These are at
topicalweb.com/making-ebooks/fbreader-captures.htm
In short, it's the best e-book reading experience I've ever had. Each page displays about the same number of words as half a paperback book page. Lines have 12-14 words, perfect reading length. (Or you can rotate it to a newspaper-column-type vertical display.) The control over type -- how the text displays -- exceeds that of any other e-book reading program: font, size, bold, italic, alignment, hyphenation by style -- e.g., text paragraphs, titles, section titles, verse, footnotes, etc. can all be designed the way you want them.
The program isn't finished yet, of course, or else the version number would be 1.0, I imagine

. There are no bookmarks, yet, nor highlighting. But the library features are very nice and, again, very much controllable by the user.
FBReader is also available for Linux desktops.
Misha and Nikolay have done fabulous work. They deserve our great thanks!
Roger Sperberg