Should I use the Clarisonic system if I have clear skin?

I have clear, sensitive skin that dries out easily. I'm about to hit 30 though and am starting to worry about fine lines in my forehead. I've been researching the Clarisonic system and am not sure if I should get it or not. I found a lot of positive reviews but also a lot that said they started breaking out when they used it because of their sensitive skin. Does anyone have any firsthand experience using the system with already clear skin?