Hi John:
Welcome to MobileRead.
I own a Sony PRS-505 and really love it. However, I currently live in Peru, so I decided not to go with the Kindle as I would not be able to enjoy the 'computerless' benefits of that device. My understanding is that people who have the Kindle really like the unit and are quite pleased with it.
I don't think you're going to go wrong with these three major players (in no especial order):
Kindle,
Sony PRS-505, or the
Cybook Gen3.
These are matur(ing) devices and they have a loyal following. My Reader is fun to use and I love it. I know that Harry loves his Gen3 unit and also gets much pleasure from it. The same with Kindle users.
Please visit MobileRead frequently, because there always new posts expressing new thoughts, considerations, and opinions.
Again, welcome to MobileRead.
Don