I'be been using my slim set on 6 and have been getting really good shaves. If had had know about this razor a long time ago I would have purchased it instead of new razors. I got bit a couple of times, but I think that's do to pressure. It's not has hefty or as heavy as the 39c, but I think I'm going to use it a while before I go back to using the 39c. I got irritation, but that's probably from going over areas without much lubrication. My face feels like it did when I was in high school.