This the exact same review I gave this app more than a year ago and it is still valid. Ive tried a large number of task/todo apps over the last couple of years and Priorities is by far my favorite. Reasons include:
1. The experience is smooth and seamless between devices (iPhone, iPad and website). I can go from working on the iPhone to the website and it feels exactly the same. In other words, I can concentrate on getting my work done rather than adjusting to different interfaces.
2. It is a solid application. It always works as expected and I have never lost data.
3. The subtasks are the best I have seen. They are explicitly shown in a task-subtask hierarchy. The subtasks can be checklist items, subtasks with due dates or both within the same task.
4. Reviewing my tasks is like flipping through the pages in a book. I can easily see all my tasks and subtasks. Nothing is hidden and I never feel overwhelmed. It is a joy to work with.
5. It is a good looking app with a lot of attention to detail. Everything on the app is easy to access, touch and manipulate.
I would like to congratulate the developer on a well done app.
WolfSpydr about Priorities