I own both Things and The Hit List (which I purchased as part of MacHeist 3), but I’ve been using The Hit List exclusively. With the release of Things 1.1.2 today I decided to take another look at it. After a short time I went back to The Hit List.
Things has two major advantages over The Hit List: it’s available for the iPhone and can sync with it, and it lets you add other team members to share task lists with.
The Hit List is a lot more attractive and just feels generally nicer. It has several features I use heavily which are missing from Things, including subtasks, time estimates, folders, and the ability to create new tasks by dragging an email or URL to a list. Hopefully there will be an iPhone version soon.