Does any of you own an eReader, or whatever the Kindle and Nook are called? What do you recommend? I don't need any fancy features - no WiFi, no 3G, just an e-ink screen where I can plug a flash drive or memory card and read my PDFs. That's it. The Kobo Reader looks good from a price/features POV but I never seen one, just the reviews, so I actually have no idea. Any suggestions?