I chose Nook.
Why did I choose the Nook? All of the ereaders have their pros and cons, but if you want to be able to check out library ebooks then your choice is the Nook or the Sony because the Kindle hates
Registering the Nook is painful if you aren't near 3G because you have to go to a BN store because you can use wireless to download books but you can't register with wireless. How annoying. I've also had the Nook freeze twice requiring a restart.
Still, I love it, squeeze it and call it my own.
I have hundreds of free books already. In addition to free online sites like Google and Project Gutenberg I have also downloaded free SciFi from Baen Free Library and I have successfully checked out a library book from a library in the US while in Canada.
The other thing I love about the Nook is that it functions like any USB drive. I drag and drop all non-DRM (i.e., digital rights managed) items like .pdf cruising guides posted on forums I read or pictures that I want on the Nook.
For DRM items like copyright protected library book checkouts of Adobe ePub materials, I use the free Adobe Digital solutions program, check out the book and then using the program drag the book onto the Nook. And it just works.
I can read in the sun. I need light at night because it works on reflected light. It feels like a heavy paperback in weight. I don't find page turning slow because I automatically have started hitting the page turn as I'm finishing reading the last line.
Thank you Carol!