We've tried the SONY Digital Paper and it works pretty well. The only disadvantage is its price. ========== Note: We don't do advanced measurements and evaluations, but first hand reviews! A joyful experience! We try to review products from the perspective of a consumer. We want to introduce you a new product with joyful video with laughter, meanwhile without troubling you with all the specifications and numbers. Using the product in real life, and let our feedback heard by the manufactures.