Geeks?
Funny that the touchscreen is seen as the geek feature.
Personally, I use my Sony only for books (not RSS or whatnot) and since a book will last me a few days, I don't mind hooking it up to my PC via a wire to add or remove content.
For me, it's the wirelessness that's the geek feature.
My money's on Sony. I ran into a Kindlista recently and was appalled at teh loss of real estate to the buttons, but all he could go on about was a quarter of a million books, which I believe I can beat on my PRS-500.
If only Sony can get the advertising right.