Sena has worked to cement its position as the leading maker of premium professional leather tablet cases, and that was clearly the company's intention with Magia Zip ($120) for the third-generation iPad. The dual-zippered folio doesn't have a pocket or frame for the tablet, instead relying on an adhesive pad to keep it in place -- clearly not the best option. On the opposite side are four credit card pockets, an ID card pocket, and three more "multi-purpose"…
