You are not quite right on the depth rating. Granted I have never taken a watch below about 60 meters, but that rating is for static conditons, i.e. still water and not touching any controls. Being in rough water, surf, banging the watch around, etc. can all flood a watch well above the rated depth. 200 or 300 meter ratings have a real advantage when diving or surfing. That said, I tend to stick to the $30-$60 Casios and get my money's worth out of them.