I've read for hours on end on everything from a Palm IIIxe(Back-lit 160x160 grey-scale) and Palm T|X(320x480 color LCD) to a Kobo(e-Ink) and an iPad2. I've had

I've read for hours on end on everything from a Palm IIIxe(Back-lit 160x160 grey-scale) and Palm T|X(320x480 color LCD) to a Kobo(e-Ink) and an iPad2. I've had no problems with any of them.