Inspired by this thread, I actually shaved with a Rotbart #15 twice this past week (and once with a bad Soviet copy of the #15). All I can say is: wow! I had forgotten how aggressive it is. I wouldn't describe it as smooth, but the shaves were irritation-free and very, very close. I would compare the end result to a Cadet OC, although the shave itself was a very different experience. I might have to give the #15 a bit more time in the rotation!I love the No.15, it's one of my all-time favorite head designs and are fabulous shavers. Unfortunately many had some problems during their long storage and show some signs of corrosion. I don't mind it on the handle but when the top cap plating gets eaten away it is sad to see.