I'm not really sure what you mean by "better for the eyes"?
It looks like real book print though and you can change the font sizes. I take mine so I can read on the treadmill or elliptical (sp?) ... I just make the font bigger since i'm moving
Their ebook store has a really good selection of books (in my opinion anyway). I don't know what the number is now, but I would guess they have several thousand titles and just about all the new titles that come out every week are up there.
ETA: If you download books from other sites, if it is in Adobe format they are readable on the eReader.