I know this isn't a useful or informative post but ...
... I just had to shout to the world that I just placed my order for a PRS-700. Stupid me left my PRS-505 on a plane and totally forgot to take it out of the pocket in front of me before deplaning.

The worst thing is it wasn't even paid for! gah! So now I have TWO monthly payments, one for HSBC and now one for GE. I feel like such an idiot. Well, I feel that way 'cause it's true.

I debated having the PRS-700 engraved with my name & email and "reward if found" but decided I'd just be smarter and tape my business card to the back. If only I'd done that with the 505, whose leather cover even has a slot for that. (Of course I called the airline, they reported nothing in Lost & Found to match...)
Will report my observations when I get my new Reader. Thanks to the MobileRead community for all your info and guidance.