Quite Useful
This is probably the most intuitive, easy-to-use yet powerful to-do list in the App Store. Much better than the stock Reminders app from Apple and much, much easier to use than Remember the Milk. It syncs across all iOS devices without needing to pay an annual fee, syncs with other popular to-do lists like Toodle-Do and has a cloud interface. The only issue I have is when I am working on the PC, the cloud interface for managing tasks does not let you add or edit notes.
MoneyMonk about
Pocket Lists 1, v3.1.0