Ive been using this application since version 1.0. Other than my iPhones built-in mail app, this application is the single-most used app I have. I was reluctant at first to buy the app because of the price, but Ive never regretted my decision once I did. With this application, I stay on top of all my todos for work, home, and "play". I keep up to date on what tasks Ive assigned my employees by using sub-tasks (one top-level task for each employee and all their "todos" as sub-tasks). I even can email the employee their task list every week with just a couple clicks.
Ive found the developers to be highly responsive to my suggestions and they have incorporated a number of my suggestions into version 1.6.
Quite simply, its my favorite app.
jediknight0 about Tasks+Cal+Sync