Twelve South’s BookBook for the iPhone 4 / 4S looks quite good, reviewed by the-gadgeteer. "So you just got yourself a brand new iPhone 4S, and now you’re looking for that one perfect case that will help protect it but also make it stylish at the same time. I’ve tried many different cases for my iPhone 4S, and none has come close to my ideal case other than the BookBook from Twelve South. "
