I got the Personalized Microderm for my birthday in January. However, I have not been using it that much, because I felt uncomfortable with the idea of sanding down my face with a potentially harmful device. I seriously could not stop thinking about all the things that could go horribly wrong using it.
It is not as scary as I thought it was. Everything is surprisingly user friendly and easily cleanable, so nothing bad happened. It came with multiple heads for treatments of various intensities. I started with a practice head which did not seem to do anything, and now I am using the most gentle one.
I used it a couple of times so far and overall it has been a positive experience. It does not give me an instant result which I was expecting, but long term use might be have a promising result. Is Personalized Microderm worth the money? Honestly I am not sure yet, and it looks like it will take some time. I will definitely write an update in the future.