I have a nice Breitling Chronomat, on a leather strap for sale, I would recommend that
In all seriousness I would buy a chronomat, or a Navitimer. When the word aviation springs to mind, two brands pop out for me....Breitling and IWC.
IWC have watches such as the 3717 in the range, but the best pilots watch in my opinion by IWC is the Big Pilot, which we will hopefully see sometime early next year.
That leaves Breitling. The Navitimer is a beautiful watch that has the pilot's heritage to it, but is also very elegant and dressy when on a leather strap. Also the Breitling Chronomat Evolution (BCE), which is less of an aviation tool, but still a pilots watch in my mind, purely due to the styling of it.
There are no reps available (good reps) of the Breitling Aerospace, Emergency, B1 etc... that are worth buying, most are fantasy watches, but you can sometimes pick up a second hand bargain (genuine) if you look in the right places.