I was going to suggest the Pocket eDGe but I see JoeZell beat me to it!
The 7" eDGe is a bit big and clunky, but I carry it in my purse (it replaced my PDA). It has my shopping list on the Android tablet side (where I have Graffiti installed) and I take handwritten notes on the e-ink side while I'm out and about. The notes can be saved as pdfs and emailed. I also have my books with me for when I'm waiting in line.
Forgot to mention: enTourage is out of business.