I'm looking at three rotating cases on Amazon (Finte, Ionic, and Khomo) thinking that the "rotating" feature would come in handy. The prices are pretty close and the cases look almost identical. Some of the reviews on all three state that the tablet won't stay upright in the provided grooves. This is my first Ipad and my questions are: is having the case "rotate" a worthwhile feature and are there any decent looking cases that hold the Ipad securely in the grooves. Thanks in advance for any guidance....