The user interface is atrocious. I had to re-download all of my books. It took several attempts to get it to even run on my tablet. You can no longer select multiple items to purchase in your cart, but have to do one-click purchasing, so if you are trying to collect a series, you're going to get a lot of needless e-mails. Sales are mixed in, rather than having their own section, making value shopping far more difficult. Faster downloads are the only positive, and desktop support is broken. Awful