Well to me it doesn't matter. What matters is the finish shave. For that the Schick adjustable is the winner. I will say that I'm using an O clone with 7 shaves on it now. I'm surprise I end up with the same outcome with it as I do with my adjustable for now. When I use the adjustable I start off with a 1 first round then 3 for second with and last pass. Then I move the starting number from 1 to 3 etc. When it starts to seem like it needs to cut closer I move it up again. Maybe I will use it like I do the O clone. I think start off at three and just use that until it needs to change. I've gotten three months of shaving every other day on one twin blade. Maybe I wil get more doing it this way. When the blade in the O clone needs to be change then I will go to the adjustable again to try it out.