One other thing that I recently learned when I was considering getting a Nook Simple Touch:
As I mentioned, I get most of my books from sources where I can acquire them with no DRM, so I very rarely buy books from Amazon and sideload my content onto my Kindle. It turns out that Nooks can only hold up to 512mb of sideloaded content and will not save any notes and highlights you make in sideloaded content, all in an effort to boost purchase from the B&N store. They don't publicize this, which I think is dirty, and has effectively prevented me from ever being a Nook customer.
I have a Nook simple touch and I could have sworn I have more than that side loaded. I will check when I get home but I know I put over 100 books on from Calibre.