I never said anything to the contrary. You claimed it was marketing [censored]. On the contrary, the number of people who know of Daniels and buy an Omega specifically to have a co-axial movement is miniscule. Most people when told about it will just glaze over in incomprehension. They can advertise it, brand it, but the portion of people who even understand why it is better is a minority. I guess rather than the increased service life / reduction in wear that comes from the reduction in friction we should look at the increase in accuracy that comes from it as well. I also agree that taking their word on a 10 year service schedule (which I must admit my Omega AD has never mentioned) would be silly. Seals must replaced and re-greased much more frequently than the movement needs serviced and the rest of the watch needs maintained and serviced at regular intervals as well.