These days I wear the no-date sub for work and any day where things get hot and sweaty ... but not too rough.
When it cools off a bit, I will wear the Luminor Marina pretty much every weekend on an ever changing leather strap.
I wear the Baume & Mercier if I'm going to be dressing up ... which is rarely.
I will wear the G-Shock in just about any situation where I figure it to get beat up ... plus its great for setting the other three.
Montrachet