Dear Ernesto,
the Mission Earth is an everyday watch and perfect for daily business. Start your collection with this one.
The Big Ingenieur could be a very nice and noble future addition to your collection, for example for your 30th or 40th birthday ;-)
Best regards from a German Mechanical Engineer :-)
Christoph
ps. Have you recognized the reference 322701 INGENIEUR?
Die Möglichkeit zur Spontanität ist der wahre Reichtum des Lebens!