The Monaco is a classic for sure! I possibly live in a skewed environment. In our company and business environment there are very many people wearing TAG Heuers, albeit almost exclusively Carreras - have nt seen a Monaco live (outside of a watch shop) for a very long time - but then again, always a question of environment 
My wife also lusted after a Monaco for a long time but now that she could easily get it, she somehow hesitates. Let's see if one is in the cards for the future