I must be a lucky one because mine and my wifes Rolexes keep great time. She wears hers to work diving and I wear mine doing all sorts of dumb things. They have never let us down. I have also had good luckwith my TAGs. I still think that the Submariner is one of the toughest watches ever. We have guys at work who wear them everyday jackhammering and other stuff like that. I bought a TAG Monaco for a dress watch and I never wear it, the Rolex seems to fit most occasions.