I think that Patek Philippe is for investing in Wristwatches, to put in the safe and keep as an investment if people are into that. Vacheron Constantin, except for a few models here and there is generally a watch for older, old money type people to wear and enjoy, and Audemars Piguet is more for the young Hip Hop, Entertainer, Rap Music Crowd, more large and flashy Bling Bling watches for the young crowd. Of course A. Lange and Sohn is more for the technical and mechanical crowd.
Not to generalize here and I do think Patek Philippe is just for investments and not watches to wear. I like Vacheron out of the rest of them since I am in my 40's and getting older and like the fact that Vacheron Constantin has been around since 1755. I think Larry King of CNN wears a Vacheron Constantin. I do wish they will put the geneva seal on all their products and of course the COSC on most of their products.