I understand your frustration with the price, I initially felt the same way. But after spending about the same amount trying the alternatives, I am a loyal Omnifocus for the iPad user.
I liken Omnifocus for the iPad to a fine automobile. Sure, many of the alternative applications can get you from point A to B, but not in the same style and comfort as Omnifocus. And, if you want to be tired, frustrated and just plain worn out at the end of your journey, then pick one of the other GTD apps.
I don't own a Mercedes, but I have enjoyed riding in one... where else can you buy one for $40.
I liken Omnifocus for the iPad to a fine automobile. Sure, many of the alternative applications can get you from point A to B, but not in the same style and comfort as Omnifocus. And, if you want to be tired, frustrated and just plain worn out at the end of your journey, then pick one of the other GTD apps.
I don't own a Mercedes, but I have enjoyed riding in one... where else can you buy one for $40.