There's a lot of things that the average daily user doesn't always pay attention to, like what type of clean up tool or what kind of defrag tool or what type of this or that should I get? It gets confusing at times, and the best advice I can give you is do some research. If you do your homework up front, you'll find that there's a huge amount of quality tools that do what you need without the associated price tags. In the end, it's like the old parable, you get what you pay for. In the case of free stuff, some of it is pretty high quality, like CCleaner or Auslogic's multi platform disk defragger (yes Vista users, it will even work for you and your 64bit operating systems. The biggest difference between the paid version and free versions are multiple added functions. But why pay for the added features if the free feature does exactly what you need? Yet another way to save pennies in the pocket and keep from having to call me.