"I ended up going with the Nook for the simple reason that it could read adobe epub books that I download from my local library...."
Hopefully you do not have to Physically Visit the library to download books?
What type of titles are available to you using the library's epub service? Only public domain classics, or more recent works as well?
Do not yet see enough advantages to a dedicated e-book reader - nor even a tablet - although as the price of the Nook COLOR comes down, could see it beginning to get attractive....