My mom has the Mia and I have the Clarisonic Plus. They do work essentially the same, but I like mine a lot more. It has a timer for the different sections of your face and a body brush for your decolletage or other areas that the Mia doesn't have. You can also customize the time settings to your own liking. I get really annoyed when I use my mom's because I end up washing my forehead for one minute because I am waiting for it to tell me to move to another area. My brush is set for 20 seconds for the forehead, 20 for the nose and chin, and 10 seconds for each cheek. I think it's worth it to upgrade for the timer and the body brush. Mine came with a brush head of each type and a body brush. While it is a little bigger than the Mia, it is actually lighter. (I got mine on QVC.) I use it with DDF Glycolic Exfoliating Wash 5%.