The PowerA Moga Pro is a step up from the already adequate Moga controller. A little bit bigger, with a better grip and an included tablet stand make this iteration a worthy successor. Assuming you can make do with the limited selection of supported titles (or don't mind working with some key mappers to make it work yourself), that is.
Now, a Slickdeals user (didn't I tell you?) points out that with coupon code "MOGAzombie" (no quotes), you can get 25% off your order directly from PowerA, which brings the price of the controller down to $37.49.