Given three separate names due to small distinctions in their designs, Incase's Book Jacket ($50), Folio ($40), and Maki Jacket ($35) are all folio-style cases for the iPad mini. The simplest of the three is Folio, shown here in white with gray topographic fabric lining; it's just a faux leather folio with a pocket on the interior left side and an iPad holder on the right. One step up in complexity is Book Jacket, shown here in black with a color-matched…