I've never found the lcd vs e-ink to be much of an issue as far as eyestrain goes. I read several hundred books no problem on my old Palm IIIc which had, wait for it, 160px by 160px resolution. The e-ink is nice too though, but the need for an external light makes reading in bed a pain. I wish Amazon would just make a kindle with an LED built in(like the Sony PRS-700).