So far it is great; however, there are two thing that would make this application much better:

1. Turning on or off should just be one click on the toolbar icon -- you should not have to click it once to go to the on/off toggle; it should just click (and be lit up when on) and click (and be unlit when off).

2. Having it default to the last implemented option as opposed to defaulting to "on" currently.