Thank you for this great review and comparison.
When I was shopping for an e-reader I wish I'd bothered to look for this review. Fortunately I picked up the PRS-600 and never looked back.
Funny thing though: as soon as I decided on buying it, I did so, knowing full well that as soon as something better came along (like the rumoured Apple tablet), I'd would plunk my money down for that and switch over.
It's a geek thing, I think. What the heck. Some people play the horses, other smoke like chimneys, while still others drink until dawn......
I buy gadgets.