I have a nook (needed a reader and couldn't wait for amazon shipping. Retail's not dead!). I'll load up pdfs/ebooks to it and read them when I'm commuting. It's

I have a nook (needed a reader and couldn't wait for amazon shipping. Retail's not dead!). I'll load up pdfs/ebooks to it and read them when I'm commuting. It's pretty convenient but I do often wish I had a real textbook for really heavy stuff, though probably don't want to either lug that around or even read it on a commute.