What's the difference between these two, other than the fact that the pro can run sensored? Their website is a bit lacking in info, with FAQ questions like; My truck is too fast now, and all my friends hate me because I'm soo rad.. or equally silly drivel. I can't seem to find any hard technical info like I can on the Novak site. Since they're being clearanced, I'm considering the MM, but want to know for sure what I'm getting.