The weathering debate has been going of for many years now. There are equal proponents on either side of the 'spanish style'.
Basically it comes down to what you, the modeler, like.
You are the one who has to look at the completed model for the rest of your life and in the end you can't make everyone happy............ so ultimately the completed model has to make you happy.
Argument can be made that what we do is a form of art and all artists have different styles and conversely every viewer of art is different and has their own particular tastes. Beauty is truly in the eye of the beholder.