>not into kindle
>not wanting to carry tons of books anywhere
Have you tried one? I got a Paperwhite, disabled the backlight and it's brilliant, works with PDFs just fine unless they're made from scanned documents in which case it confuses the display. Battery lasts for about 2 months and it's not bothersome to read off of the screen at all. I certainly prefer physical books but the convenience is too great. I never managed to read PDFs before because reading from a computer screen for hours is awful.