A little complex, but good
I still prefer Things App, as that is lightweight and easy to get started with. But, I outgrew it and switched to OmniFocus. I sometimes find OmniFocus a little confusing and complex, but after a few weeks I’m humming along nicely with this superb piece of software.
Also of note, product support via email has been exceptional.
iPad_Fan about
OmniFocus 2, v2.0.3