If a book isn't technical, I can usually read it in audio format as I do something otherwise mindless like washing dishes, so most of what I need to read (with my eyes) contains equations, code listings (like this JavaScript book), diagrams, maps, etc., that don't work well at all on today's e-ink displays: Thousand-page "Introduction to..." technical books, code listings, foreign-language tutorial textbooks, journal articles, etc.

Unfortunately, all the books I really want to read with my eyes are too heavy to tote around or take on plane trips, which is almost the only time I have time to read them.

I need a REALLY GOOD reader. I wish I had a lightweight, clipboard-sized, hi-rez, B&W, PDF reader with the flick scrolling, pinch resizing, etc. of an iPad with the battery life to last a whole delayed flight from San Francisco->Tokyo->Singapore, door to door. I might be able to make do with a jumbo tablet if the USB ports that some airlines now put in the seats can power it.