Bookworms, rejoice. Your days of driving to the bookstore, competing for parking, and waiting in line just to get your hands on the next future best-seller are over. Now you can stay in your cozy chair, drink your chamomile tea and download that must-have literary masterpiece right to your e-reader. And when you want to spend your vacation plowing through your entire personal library, you can take all your books with you to the beach in one, sleek device. E-readers may be the greatest invention since the printing press, but which one is worthy of your favorite reads?