Might I suggest a Pocketbook 360
It's called Pocketbook for a good reason--it fits in my pocket! Seriously, I don't eat out often, but I do go to the company cafeteria almost daily (with my own lunch) and I don't really feel comfortable leaving any reader on the table while I go heat up my lunch, get napkins and silverware, etc. So I slip it in my pocket, and off I go!