Small install and does what it is supposed to do..
Shows exactly size, percent of drive, type of file. Does exactly what it is supposed to do. it is a very small install and quick to show results, even on a drive that is practically full. I use it exclusively to show my clients why their drive is full. The to-scale visual representation is great for the uneducated to understand file size.
Pros: Easy to understand what you are looking at.
Cons: I wouldn't change anythng.