I have the 3g and I love it. I didn't care about the color as I didn't want to pay extra as the books I read are all black and white anyway. I tis so easy to download and the most I have paid for a book is 10 dollars. I read a lot of mysteries and most of the odnes I buy are around 4 dollars.
My husband read a lot of civil wars books and lot of his are free. We both have one and love it. Besides I was so tired of my book sleves being over loaded and having to take them all of the shelf and dust. Also finding some one to take them. Now I am going to purchase some nice leather bound books to put on my shelfs and not over load it and make it look nice. I don't think you will regreat getting a Kindle or any e-book.