OmniFocus 2 for iPad
OmniFocus has been the gold standard for many GTD folks for years. The Mac and iPhone apps have both been updated recently and so the iPad app was next. With iOS 8, the folks at The Omni Group have delivered. OmniFocus 2 for iPad has support for sharing extensions, a Today view widget, background sync, and a modern design that fits with the latest iOS aesthetic.
OmniFocus 2 for iPad is $29.99, and there is an optional Pro upgrade for $19.99 (in-app purchase) that will open up the ability to create your own view settings, searches, perspectives, and filters. If you have OmniFocus 2 on the Mac, your custom perspectives will sync to the iPad version. Also, with the Pro upgrade for OF2 on iPad you’ll be able to arrange the top-level sidebar to have faster access to your most-used perspectives.