If not a Rolex, then a Tag Heuer Calibre 36 as no one will know you are wearing a high end watch. I prefer a chronograph movement and the Zenith el Primero is arguably "the" chronograph movement.
I have two:
Tag Heuer Link Calibre 36 has the el Primero 400 movement. I really like how comfortable this watch is to wear.
Tag Heuer Carerra Calibre 36 Flyback has the el Primero 405 movement. I just love the look of this watch.
