Those having the LCD vs eInk debate. The eye strain issue is there using any backlit device. Eye strain doesn't take hours to be noticed. One side note to this debate everyone over 45 will eventually come to the conclusion that backlit devices are too much of a pain for pleasure reading. Until that age you may or may not even know what many of us are complaining about.
Of course not all LCD screens are back lit. The Jetbook has a LCD screen that is not back lit and it claims 11500 page turns per charge. Pixel QI is developing screens now that are LCD but not back lit. The OLPC program uses such a screen.
I think any high contrast / non-backlit screen, whether it is LCD, eInk or a yet to be determined screen will be acceptable to the market. Currently it looks like the non backlit LCD screens have the potential to be cheaper and more flexible then their eInk cousins. This flexibility would easily allow multifunction robust readers that would still be the size of current readers or full page tablets (Including color).
I'm looking forward to the next generation devices and the options they'll bring.
